Debut ICRM NL 23 - LNHB · his local organizing team, the Scientific Programme Committee, the...

ICRM ICRM NEWSLETTERNEWSLETTER

International Committee for Radionuclide Metrology

Editor : Marie-Martine Bé

Issue 23 – March 2009

LABORATOIRE NATIONAL LABORATOIRE NATIONAL HENRI BECQUERELHENRI BECQUEREL

ICRM Newsletter 2008 Issue 23


International Committee for Radionuclide Metrology

ICRM

ICRM NEWSLETTER Issue 23

NOT FOR PUBLICATION. This document should neither be quoted as a reference in

publications nor listed in abstract journals, no reference should be made to the information

contained in this Newsletter except with the permission of the author and as a private

communication. Such permission should be sought directly from the contributor and not

through the editor. The ICRM makes no warranty, express or implied or assumes any legal

liability or responsibility for the accuracy, completeness or usefulness of any information,

apparatus, product or process disclosed, or represents that its use would not infringe

privately owned rights.

Editor : Marie-Martine Bé LNE-Laboratoire National Henri Becquerel (LNE-LNHB) CEA-Saclay 91191 Gif-sur-Yvette Cedex France Tel. : + 33 1 69 08 46 41 Fax. : + 33 1 69 08 26 19 E-mail : [email protected]

Web Editor : Christophe Dulieu

LNE-Laboratoire National Henri Becquerel (LNE-LNHB) CEA-Saclay 91191 Gif-sur-Yvette Cedex France E-mail : [email protected]

March 2009

1


2


CONTENTS Contributions

Editorial

Instructions to Contributors

President’s message

Announcement: 17e ICRM Conference, September 7 – 12, 2009, Bratislava

Reports of the Working Group Coordinators

CONTRIBUTIONS

Ø Argentina • Comisión Nacional de Energía Atómica, CNEA, Buenos Aires

Ø Australia • Radiation Metrology, ANSTO, Lucas Heights

Ø Austria • IAEA Nuclear Data Section, Vienna

• Bundesamt für Eich- und Vermessungswesen, BEV, Vienna

• Institut für Isotopenforschung und Kernphysik, Vienna

Ø Belgium • Institute for Reference Materials and Measurements, IRMM, Geel

• SCK•CEN, Mol

Ø Brazil • Laboratório Nacional de Metrologia das Radiações Ionizantes, LNMRI/IRD/CNEN,

Rio de Janeiro

Ø Croatia • Ruder Boškovic Institute, RBI Zagreb

Ø Czech Republic • Czech Metrology Institute, CMI Prague Ø France • Laboratoire National Henri Becquerel, LNE-LNHB,

Saclay

Ø Germany • Physikalisch - Technische Bundesanstalt, PTB, Braunschweig

Ø India • Bhabha Atomic Research Centre, BARC, (SA1/SA2), Mumbai

Ø Italy • Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti, ENEA, Roma

3


Ø Japan • National Metrology Institute of Japan, National Institute of advanced Industrial Science and Technology, NMIJ/AIST

Tsukuba

Ø Poland • Laboratory of Radioactive Standards, RC POLATOM, Otwock-Swierk

Ø Romania • Institutul National de Fizica si Inginerie Nucleara, INFIN-HH, (SA1/SA2),

Bucharest

Ø Russia • D.I. Mendeleyev Institute for Metrology, VNIIM, St. Petersburg

Ø Slovak Republic • Slovak Institute of Metrology, SMU, Bratislava

Ø Spain • Laboratorio de Metrología de Radiaciones Ionizantes, CIEMAT Madrid

Ø South Africa • CSIR-National Metrology Laboratory, Cape Town

Ø Switzerland • Institut Universitaire de Radiophysique Appliquée, Lausanne

Ø Taiwan • Institute of Nuclear Energy Research, NRSL/INER Longtan Ø United Kingdom • National Physical Laboratory, NPL

Teddington

Ø United States • National Institute of Standards, NIST

of America Gaithersburg

4


EDITORIAL

This newsletter was established in response to a recommendation of the International

Committee for Radionuclide Metrology made during its General Meeting in Grenoble 1985. It is meant to serve as a medium for informal exchange of information between workers active in the field of Radionuclide Metrology.

The scope of the Radionuclide Metrology Newsletter is to describe briefly current

activities in the following topics:

• foil and source preparation; • α-, β- and γ-ray spectrometry including spectrum evaluation; • improvement and development of radionuclide measurement techniques; • measurement and evaluation of radionuclide data; • low-level radioactivity measurement techniques; • life-sciences; • quality assurance and traceability.

In order to ensure that the Newsletter is as comprehensive and informative as possible, contributions are sought from all laboratories known to be engaged in measurements and data evaluation techniques relevant to Radionuclide Metrology.

All previous contributors will be informed concerning the deadline for the next issue. New contributing Radionuclide Metrology laboratories are welcome. Please contact the editor.

Any comments on this issue or suggestions for improvement will be welcome.

At the ICRM General Meeting in Paris 1995, it was decided that the ICRM Newsletter would also allow for the distribution of Progress/Planning Reports SA1 and SA2.

From the experience of this issue, we have the following situation : Laboratories regard their normal Newsletter contribution as the fulfilment of SA1/SA2. In this case this is indicated on the contribution by “SA1/SA2”. Or laboratories provide (additionally) the traditional SA1/SA2 reports which should not be longer than 2 pages. In the latter case it should be mentioned in the accompanying letter, that the SA1/SA2 contributions be intended for publication in the Newsletter.

For economy reasons, at the ICRM General Meeting in Dublin 2003, it was agreed that the ICRM Newsletter would be put in the LNE-LNHB (former BNM-LNHB) web site (http://www.nucleide.org/Publications/icrm_newsletter.htm ) distributed in hard copy , or CD-rom only to those whom have asked for it. • Contributions may be sent by E-mail as an attachment in MS Word or as plain text file.

5


6


INSTRUCTIONS TO CONTRIBUTORS

This Newsletter is realised with no alterations by the editor. To ensure readability and avoid

unnecessary work by the editor, it is suggested that :

• Contributions should be typed on plain white A4 paper (21 cm x 29,7 cm) format inside

a box of 15,5 cm x 20 cm which should be situated 4,5 cm from the upper and 3 cm

from the left margin. Please use font Times New Roman size 12. The format indicated

below should be followed.

• Contributions should contain no page number, date, signature, or any correspondence

references typed on this sheet. Correspondence to the editor must be on a separate sheet.

• Contributions should be in English and carefully proofread by the authors.

• References to publications or reprints should be completed as required by the Physical

Review.

• Complete mailing address and the name of a person who can be contacted for additional

information by those desiring it should be given at the end.

• Please use the “contribution.dot” file.

• Please note that only files on “Word” format will be accepted.

7


8


Contribution Format

LABORATORY Name of laboratory NAMES If more than one laboratory is involved identify affiliation

through abbreviations (ORNL, LASL, etc.). Visitors can also be identified with asterisks. KEYWORDS Alpha spectrometry, beta spectrometry, calorimetry, (anti)

coincidence method, cryogenic detector, data evaluation, data measurement, Euromet, gamma-ray spectrometry, gas proportional counter, ionisation chamber, life sciences, liquid scintillation, low-level, NaI well counter, neutron measurement, radioactive gas, radiochemistry, simulation code, SIR, source preparation, X-ray spectrometry, radionuclide by name (e.g. 55Fe or Fe-55). Choose the good ones

APPARATUS Choose one; the former for experiments and the latter for ACTIVITY compilations, calculations, or theory. RESULTS Use this for experimental results. PUBLICATIONS Use Physical Review style. Include only published materials.

IN PROGRESS Use this for description of the current work. INFORMATION Use this for evaluations or compilations. SOURCE IN PREPARATION Use this to also indicate papers submitted for publication. OTHER RELATED Optional. PUBLICATIONS ADDRESS Mailing address. Give also telephone, telex, fax numbers and

E-mail. CONTACT Single contact person.

9


10


General information on ICRM

(President’s Message) The International Committee for Radionuclide Metrology (ICRM) is an association of radionuclide metrology laboratories whose membership is composed of delegates of these laboratories together with other scientists (associate members) actively engaged in the study and applications of radioactivity. It explicitly aims at being an international forum for the dissemination of information on techniques, applications and data in the field of radionuclide metrology. This discipline provides a range of tools for tackling a wide variety of problems in numerous other fields, for both basic research and industrial applications.

There are 38 institutions now represented by delegates in the ICRM. The ICRM has no membership fee and no paid secretariat or other staff. Its overall direction is determined by the delegates in General Meetings, which convene usually every two years, where organizational guidelines and directions for the working programs are agreed upon. The following officers of ICRM are presently serving on the Executive Board: President Yoshio Hino 1

Vice-President Uwe Wätjen 2 Guy Ratel3 Carlos José da Silva4

Secretary Pierino De Felice5

Past-President Mike Woods 6

The Executive Board heavily on the Nominating Committee which has the objective of ensuring the continuity of purpose and vigour of ICRM. It does this by soliciting from the membership, and by itself proposing, the names of eligible candidates to fill vacancies about to occur on the Executive Board and the Nominating Committee. The current membership of this committee is:

Chairperson Bruce Simpson 7

Members Maria Sahagia 8 Herbert Janβen 9

Plenary meetings of the ICRM are held biennially, and have developed into a successful instrument of communication among various specialists, thus encouraging international co-operation. The most recent series of ICRM meetings was at the 16th International Conference on Radionuclide Metrology and its Applications (ICRM 2007), which took place on 3 - 7 September 2007 at the Arabella Sheraton Grand Hotel in Cape Town, South Africa. The local organization was undertaken by the National Metrology Institute of South Africa (NMISA) in partnership with the iThemba Laboratory for Accelerator Based Sciences located near Cape Town. Our appreciation and thanks go to all who contributed to this very successful and busy meeting. In particular we recognize the great contributions made by Dr. Bruce Simpson and his local organizing team, the Scientific Programme Committee, the referees and session chairmen and to the authors of papers.

11


ICRM activities are largely the responsibility of its working groups. Each group is guided

by a co-ordinator who acts as a centre for ideas and communications and may organize conferences and workshops. There are now seven working groups with the following fields of interest: (1) Radionuclide Metrology Techniques http://users.skynet.be/icrmrmt/ John Keightley 10 <[email protected]>, Mike Unterweger 11 <[email protected]>

(2) Life Sciences Jeffrey T. Cessna 11 <[email protected]>

(3) Alpha-Particle Spectrometry http://www.ciemat.es/sweb/metrologia/Alpha.html Eduardo Garcia-Toraño12 <[email protected]>

(4) Gamma-Ray Spectrometry http://www.nucleide.org/ICRM_GSWG.htm Marie-Christine Lépy 13 <[email protected]>

(5) Liquid Scintillation Techniques http://www.nucleide.org/icrm.htm Brian Zimmerman 11 <[email protected]>

(6) Low-Level Measurement Techniques Dirk Arnold 9 <[email protected]>

(7) Non-Neutron Nuclear Data Marie-Martine Bé 13 <[email protected]>

We all thank above co-ordinators and also special thank Dr. Alan Nichols14

, Dr. Brian Zimmerman11 and Dr. Philippe Cassette13 for their great contributions as the chair of Non-Neutron Nuclear Data, Life Sciences and Liquid Scintillation Techniques until the last 16th ICRM meeting, respectively.

The next 17th international conference of ICRM 2009 will be held in September 2009 in

Bratislava, Slovakia organized by the Slovak Institute of Metrology (SMU). This conference will include oral and poster presentations and business meetings of the ICRM Working Groups, in plenary format. More detailed information will be announced soon.

Finally, we express our heartfelt thanks to Dr. Marie-Martine Bé for compiling and upload this ICRM Newsletter, and also thanks to Dr. Lisa Karam11 for maintaining our ICRM homepage.

January 2009

Yoshio HINO President of ICRM

12


References 1. National Metrology Institute of Japan, National Institute of Advanced Industrial

Science and Technology (NMIJ/AIST), 1-1-1, Umezono, Tsukuba, Ibaraki 305-8568, Japan.

2. Institute for Reference Materials and Measurements (IRMM) Retieseweg 111, B-2440 Geel, Belgium 3. Bureau International des Poids et Mesures, Pavillon de Breteuil (BIPM), F-92312

Sèvres CEDEX, France.

4. Instituto de Radioproteção e Dosimetria, Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI), Av. Salvador Allende, 22780-160 Rio de Janeiro, Brazil.

5. Ente per le Nuove tecnologie, l'Energia e l'Ambiente (ENEA), C.R. Casaccia, P.O. Box 2400, I-00100 Rome, Italy.

6. Ionizing Radiation Metrology Consultants Ltd, 152 Broom Road, Teddington, Middlesex TWll 9PQ, U.K.

7. National Metrology Institute of South Africa (NMISA), 15 Lower Hope Road, Rosebank 7700, Cape Town, South Africa.

8. National Institute of C&D for Physics and Nuclear Engineering (IFIN), P.O. Box MG-6, RO-76900 Bucharest, Romania.

9. Physikalisch-Technische Bundesanstalt (PTB), Bundesalle 100, D-38116 Braunschweig, Germany.

10. National Physical Laboratory (NPL), Hampton Road, Teddington, Middlesex, TW11 0LW, UK.

11. National Institute of Standards and Technology (NIST), Gaithersburg, Maryland, 20899-8462, U.S.A.

12. Metrología de Radiaciones Ionizantes, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 22, E-28040 Madrid, Spain.

13. Laboratoire National Henri Becquerel (LNE-LNHB), CEA-Saclay, F-91191 Gif sur Yvette cedex, France.

14. International Atomic Energy Agency (IAEA), Wagramerstrasse 5, A-1400 Vienna, Austria.

13


14

Con

fere

nce

Secr

etar

iat

(reg

istr

atio

ns, f

ees,

acc

omm

odat

ion)

M

rs. S

aski

a M

ikičo

vá

Slo

vak

Inst

itute

of

Met

rolo

gy

Kar

love

ská

63

842

55 B

ratis

lava

, Slo

vak

Rep

ublic

P

hone

: +

421

2 60

294

758

Fax

:

+42

1 2

6029

4 67

0 e-

mai

l: sa

skia

@IC

RM

2009

.sk

Scie

ntif

ic S

ecre

tari

at

(abs

trac

ts, m

anus

crip

ts, p

roce

edin

gs)

Ant

on Š

vec

Cen

ter

of Io

nizi

ng R

adia

tions

S

lova

k In

stitu

te o

f M

etro

logy

K

arlo

vesk

á 63

84

2 55

Bra

tisla

va, S

lova

k R

epub

lic

Pho

ne:

+42

1 2

6029

4 65

7 F

ax:

+

421

2 60

294

670

e-m

ail:

anto

n@IC

RM

2009

.sk

Dea

dlin

es a

nd D

ates

20

08-S

ep-2

6 S

ubm

issi

on o

f pr

e-re

gist

ratio

n fo

rm

to r e

ceiv

e 2nd

ann

ounc

emen

t 20

09-J

an-3

1 D

eadl

ine

for

subm

issi

on o

f ab

stra

cts

2009

-Mar

-20

Not

ifica

tion

of a

ccep

tanc

e of

abs

trac

ts

2009

-Apr

-03

Sec

ond

anno

unce

men

t

2009

-Jun

-15

Dea

dlin

e fo

r ea

rly

conf

eren

ce

regi

stra

tion

and

subm

issi

on o

f ac

cept

ed p

aper

s 20

09-S

ep-7

Sta

rt o

f co

nfer

ence

20

09-S

ep-1

1 E

nd o

f co

nfer

ence

20

09-S

ep-1

1 G

ener

al M

eetin

g of

ICR

M

2009

-Nov

-20

Sub

mis

sion

of

final

ver

sion

of

pape

rs

Pre

-Reg

istr

atio

n F

orm

In

ord

er t

o re

ceiv

e th

e ne

xt a

nnou

ncem

ent,

ple

ase

com

plet

e an

d se

nd

back

th

is

form

to

th

e C

onfe

renc

e S

ecre

tari

at b

y S

epte

mbe

r 26

, 200

8.

Last

nam

e:

F

irst

nam

e:

T

itle(

s):

Org

anis

atio

n:

Add

ress

:

Cou

ntry

:

T

elep

hone

:

T

elef

ax:

E

-mai

l:

I i

nten

d to

sub

mit

a pa

per:

y

es

no

Top

ic:

Acc

ompa

nyin

g pe

rson

(s):

y

es

no

I nee

d a

hard

cop

y of

the

sec

ond

anno

unce

men

t:

y

es

no

F

IRS

T A

NN

OU

NC

EM

EN

T

AN

D C

ALL

FO

R P

AP

ER

S

17th

Inte

rna

tiona

l Con

fere

nce

on

Ra

dion

uclid

e M

etr

olog

y a

nd

its A

pplic

atio

ns

ICR

M 2

009

S

e pte

mbe

r 7

– 11

, 20

09

Bra

tisla

va

Slo

vak

Re

publ

ic

O

rgan

ized

by

Int e

rnat

iona

l Com

mitt

ee f

or R

adio

nucl

ide

Met

rolo

gy (

ICR

M)

Hos

ted

by

Slo

vak

Inst

itute

of

Met

rolo

gy (

SM

U)

and

supp

orte

d by

O

ffic

e fo

r S

tand

ardi

satio

n, M

etro

logy

and

Tes

ting

of

the

Slo

vak

Rep

ublic

15

ICR

M 2

009

Con

fere

nce

Des

crip

tion

T

he

Inte

rnat

iona

l C

omm

ittee

fo

r R

adio

nucl

ide

Met

rolo

gy i

s pl

ease

d to

ann

ounc

e th

at i

ts n

ext

conf

eren

ce w

ill b

e he

ld a

t th

e S

lova

k In

stitu

te o

f M

etro

logy

in

B

ratis

lava

, S

lova

k R

epub

lic,

in

Sep

tem

ber

7-11

, 200

9.

The

go

al

of

ICR

M

2009

is

to

pr

ovid

e an

op

port

unity

for

the

exc

hang

e of

inf

orm

atio

n on

te

chni

ques

an

d ap

plic

atio

ns

of

radi

onuc

lide

met

rolo

gy,

and

to

enco

urag

e in

tern

atio

nal

co-

oper

atio

n in

thi

s fie

ld.

Thi

s bi

enni

al c

onfe

renc

e w

as

rece

ntly

he

ld

in

Sep

tem

ber

2007

in

C

ape

Tow

n, S

outh

Afr

ica.

T

he

conf

eren

ce

will

in

clud

e or

al

and

post

er

pres

enta

tions

and

bus

ines

s m

eetin

gs o

f th

e IC

RM

W

orki

ng G

roup

s.

Con

fere

nce

topi

cs

• A

spec

ts o

f in

tern

atio

nal m

etro

logy

•

Inte

rcom

pari

sons

•

Mea

sure

men

t st

anda

rds

and

refe

renc

e m

ater

ials

•

Rad

ionu

clid

e m

etro

logy

tec

hniq

ues

• A

lpha

-par

ticle

and

bet

a-pa

rtic

le s

pect

rom

etry

•

Gam

ma-

ray

spec

trom

etry

•

Liqu

id s

cint

illat

ion

coun

ting

tech

niqu

es

• N

ucle

ar d

ecay

dat

a

• Lo

w le

vel m

easu

rem

ents

•

Life

sci

ence

s •

Sou

rce

prep

arat

ion

tech

niqu

es

• Q

ualit

y as

sura

nce

and

unce

rtai

nty

eval

uatio

n in

ra

dioa

ctiv

ity m

easu

rem

ents

A

dditi

onal

act

iviti

es d

urin

g th

e co

nfer

ence

will

be

the

mee

ting

of t

he I

CR

M E

xecu

tive

Boa

rd,

the

Gen

eral

Mee

ting

of I

CR

M m

embe

rs,

a vi

sit

to t

he

labo

rato

ry

faci

litie

s of

th

e S

lova

k In

stitu

te

of

Met

rolo

gy a

nd s

ocia

l eve

nts.

Con

fere

nce

Ven

ue

Slo

vak

Inst

itute

of

Met

rolo

gy

Ka r

love

ská

63

Bra

tisla

va, S

lova

k R

epub

lic

Con

fere

nce

web

pag

e ht

tp:/

/ww

w.IC

RM

2009

.sk/

Con

fere

nce

Lan

guag

e T

he o

ffic

ial l

angu

age

of t

he c

onfe

renc

e is

Eng

lish.

A

l l a

bstr

acts

and

pre

sent

atio

ns m

ust

be in

Eng

lish.

P

arti

cipa

tion

A

ll th

ose

inte

rest

ed

in

part

icip

atin

g in

th

e co

nfer

ence

are

ask

ed t

o re

turn

the

ove

rlea

f P

re-

Reg

istr

atio

n F

orm

, du

ly

com

plet

ed

as

soon

as

po

ssib

le

to

the

Con

fere

nce

Sec

reta

riat

bu

t no

t la

ter

than

Sep

tem

ber

26, 2

008.

C

all f

or P

aper

s C

ontr

ibut

ed p

aper

s on

the

top

ics

liste

d ab

ove

are

we l

com

e.

Aut

hors

w

ishi

ng

to

subm

it a

pape

r sh

ould

se

nd

an

Abs

trac

t to

th

e S

cien

tific

S

ecre

tari

at b

y Ja

nuar

y 31

, 200

9.

The

abs

trac

ts m

ust

be s

uffic

ient

ly d

etai

led

and

info

rmat

ive

to a

llow

the

Sci

entif

ic C

omm

ittee

to

judg

e th

e sc

ient

ific

mer

it of

the

pap

ers

and

thei

r su

itabi

lity

for

the

conf

eren

ce

prog

ram

me.

T

he

auth

ors

are

requ

este

d to

fo

llow

an

d ke

ep

the

abst

ract

su

bmis

sion

fo

rm

avai

labl

e at

th

e co

nfer

ence

web

pag

e.

Not

ifica

tion

of a

ccep

tanc

e w

ill b

e se

nt t

o au

thor

s un

til M

arch

20,

200

9. A

utho

rs m

ust

subm

it th

e fin

al

text

of

ac

cept

ed

pape

rs

to

the

Sci

entif

ic

Sec

reta

riat

by

Ju

ne

15,

2009

. A

utho

rs

shou

ld

antic

ipat

e di

scus

sing

the

ir p

aper

s w

ith t

he r

efer

ees

befo

re

conf

eren

ce,

and

mak

ing

any

edito

rial

an

d/or

te

chni

cal

mod

ifica

tions

re

sulti

ng

from

th

ose

disc

ussi

ons

by N

ovem

ber

20, 2

009.

Pro

ceed

ings

C

onfe

renc

e pr

ocee

ding

s ar

e pl

anne

d to

be

pu

blis

hed

in t

he j

ourn

al A

PP

LIE

D R

AD

IAT

ION

A

ND

IS

OT

OP

ES

. M

anus

crip

ts i

n E

nglis

h m

ust

com

ply

with

gui

delin

es w

hich

will

be

sent

to

the

auth

ors

toge

ther

w

ith

the

info

rmat

ion

on

acce

ptan

ce o

f th

e pa

per.

A

ccep

tanc

e of

a

pape

r fo

r pr

esen

tatio

n at

th

e co

nfer

ence

doe

s no

t au

tom

atic

ally

im

ply

that

it

will

be

publ

ishe

d in

the

pro

ceed

ings

. P

ublic

atio

n of

th

e m

anus

crip

ts

is

subj

ect

to

the

resu

lt of

a

refe

reei

ng p

roce

dure

. Sc

ient

ific

Com

mit

tee

Dir

k A

rnol

d, P

TB

(G

erm

any)

M

a rie

-Mar

tine

Bé,

LN

E-L

NH

B (

Fra

nce)

P

hilip

pe C

asse

tte,

LN

E-L

NH

B (

Fra

nce)

P

ieri

no D

e F

elic

e, E

NE

A (

Italy

) E

duar

do G

arci

a-T

orañ

o, C

IEM

AT

(S

pain

)

Yos

hio

Hin

o, N

MIJ

(Ja

pan)

M

ikae

l Hul

t, IR

MM

(E

U)

Lisa

Kar

am, N

IST

(U

SA

) Jo

hn K

eigh

tley,

NP

L (U

K)

Mat

jaž

Kor

un, J

SI (

Slo

veni

a)

Mar

ie-C

hris

tine

Lépy

, LN

E-L

NH

B (

Fra

nce)

S

tefa

an P

omm

é, IR

MM

(E

U)

Guy

Rat

el, B

IPM

(In

tern

atio

nal)

C

arlo

s da

Silv

a, IR

D (

Bra

zil)

B

ruce

Sim

pson

, NM

ISA

(S

outh

Afr

ica)

M

ike

Unt

erw

eger

, NIS

T (

US

A)

Uw

e W

ätje

n, IR

MM

(E

C)

Mik

e W

oods

, IR

MC

(U

K)

Bri

an Z

imm

erm

an, N

IST

(U

SA

) R

egis

trat

ion

Fee

s an

d A

ccom

mod

atio

ns

Det

ails

will

be

avai

labl

e so

on a

t th

e co

nfer

ence

w

e b p

age

and

will

be

dist

ribu

ted

with

the

sec

ond

anno

unce

men

t.

16


ICRM

CONTRIBUTIONS

17


18


Coordinator’s Report

ICRM Liquid Scintillation Counting Working Group

Two main activities were carried out by the Liquid Scintillation Counting (LSC) Working Group (WG) in the past year. The first was the organization of a comparison aimed at investigating sources of uncertainty, including inter-laboratory variability in analyzing data acquired using the Triple-to-Double Coincidence Ratio (TDCR) method. The specific goals of the comparison were to:

1. Study differences in calculation results from different TDCR analysis programs using a single set of data,

2. Investigate differences in analysis techniques and uncertainty assessment philosophies between laboratories using the TDCR method, and

3. Study effect of not taking asymmetry of PMT efficiencies into account on calculated activity.

To achieve this, a set of TDCR data for the pure beta emitter 99Tc, acquired on the NIST TDCR system, was distributed to the participants, who were to analyze the data according to their normal procedures and report the activity concentration of the 99Tc solution from their results. The preliminary observations from the comparison were:

• Existing programs, when used with the appropriate input data, appear to give essentially the same activity value.

• Choice of correct shape factor for 99Tc is necessary to obtain correct results; assumption of same shape as 1st forbidden-unique is invalid.

• For TDCR systems with large asymmetry in phototube efficiency, it is crucial to take this into account. Failure to do so in this case leads to a +0.6 % systematic error.

• In terms of uncertainty assessment, very different philosophies regarding uncertainty assessments exist between the various laboratories. The rigor taken in the assessment of uncertainty components appeared to be correlated with level of experience with the TDCR method.

The other main activity of the WG in the past year was the organization of an interim meeting on 10-11 November at the National Physical Laboratory in Teddington, UK. Experience has shown that the format of WG meetings held in conjunction with the General ICRM meeting provide minimal opportunity for discussion and interaction. The interim meeting was attended by 12 participants from 6 laboratories. Participants were encouraged to give short presentations on their current work, including work currently in progress. The specific topics of the presentations were:

• Instrumentation for TDCR, new counting systems, commercial LS counters o Field Programmable Gate Array (FPGA)-based acquisitions systems o New TDCR systems (including commercial versions) o Count-rate dependence (non-linearity) issues in commercial counters

• Recent Standardizations/Measurements using LSC (6 presentations) • Other topics

o LS counting of electron-capture nuclides o Compositions of commercial LS cocktails o New cocktails for specific applications

19

o Preliminary results of 99Tc TDCR data comparison o Efficiency variation in TDCR: how do we analyze the data? o Problems with photon emitters in applying the TDCR method o Cocktail stability when measuring short-lived radionuclide o Study of Light Emission Processes in Liquid Scintillation Counting

In terms of outputs of the meeting, it was agreed that a follow-up comparison of TDCR data would be carried out late in 2009. In this case, the data set would consist of data acquired for tritiated water using the LNHB TDCR systems. Additionally, it was agreed that the results of the upcoming CCRI(II) Key Comparison of 177Lu would provide a preliminary indication as to the applicability of the TDCR method to radionuclides that emit both beta particles and high-energy (non- x ray) photons. A CD of the presentations will be prepared and sent to the participants. Additional copies may be obtained from the ICRM Secretary once they are available. It is also planned to post the presentations on the LSCWG web site.

The next meeting of the LSCWG will be held in conjunction with the biennial ICRM general meeting in September 2009 in Bratislava, with the exact date and format to be decided in early March 2009. It is expected that due to time constraints, the only topics that will presented will be an update of the November LSCWG meeting in Teddington and perhaps one or two short presentations on works in progress. Details will be sent to ICRM members in due course prior to the ICRM meeting.

B. E. Zimmerman, Coordinator

National Institute of Standards and Technology 100 Bureau Dr., Stop 8462 Gaithersburg, MD 20899-8462 USA

20


Report on the Activities of the Low-Level Measurement Techniques Working Group

In the period since the last report (i.e. from 1st January 2008-31st December 2008) the main activity of the LLMT-WG was to organize the ICRM-LLRMT’08 conference. The conference followed on from earlier events, held in Monaco (1991), Seville (1995), Mol (1999) and Vienna (2003). The measurement of low levels of radioactivity in a wide variety of matrices has been of interest to the scientific community since the beginning of the ‘nuclear age’ and techniques have always been developed to enable the detection of ever lower amounts of radioactivity in smaller samples and for many new applications. This conference had a look at the latest developments in this area with reference to and emphasis on the metrology and quality of measurements. The conference topics were:

• Radiochemical Techniques Fission Products, Actinides, Activation Products, Rapid Methods

• Applications NORM, TENR, Decommissioning, Food Safety, Safeguards, Remediation, Emergency Response, Waste Management, Support Measurements for Astroparticle Physics, etc.

• Radiometrics α-Particle Spectrometry, Liquid Scintillation Counting, ‘Conventional’ and Ultra Low-Level γ-Ray Spectrometry, Other Radiometric Techniques

• Non-radiometric measurements Mass Spectrometry – ICP, Thermal Ionisation, Accelerator Based

• Radon Rn-Isotopes and their Decay Products

• Quality Traceability, Reference Materials, Proficiency Tests, Intercomparisons, Quality Assurance

The most recent ICRM-LLRMT conference (ICRM-LLRMT’08) took place on 22-26 September 2008 at the Physikalisch-Technische Bundesanstalt (PTB). The conference was attended by 120 participants from 25 countries worldwide. We had in total 43 oral- and 42 poster-presentations. Our appreciation and thanks go to all who contributed to this successful meeting, in particular to the authors of the papers, the conference organizing team and to the members of the Scientific Committee for selecting and refereeing the papers.

Scientific Committee Dirk Arnold PTB Braunschweig, Germany Pierino De Felice ENEA Casaccia, Italy Mikael Hult EC-JRC-IRMM Geel, Belgium Christian Hurtgen SCK•CEN Mol, Belgium Ken Inn NIST Gaithersburg, USA Simon Jerome NPL Teddington, UK Matthias Köhler VKTA Dresden, Germany Matjaz Korun JSI Ljubljana, Slovenia Matthias Laubenstein LNGS-INFN Assergi, Italy Marie-Christine Lépy CEA-LNHB Saclay, France Franz-Josef Maringer BEV Vienna, Austria Annette Röttger PTB Braunschweig, Germany Umberto Sansone IAEA Seibersdorf, Austria Herbert Wershofen PTB Braunschweig, Germany

Proceedings The conference proceedings will be published in the journal APPLIED RADIATION AND ISOTOPES. The manuscripts were submitted to the publisher and the production process has already started. Dirk Arnold, Physikalisch-Technische Bundesanstalt, 38118 Braunschweig, Germany

21


Coordinator’s Report

ICRM Life Science Working Group

The purpose of the Life Sciences Working Group is to provide a forum for ICRM members to address radionuclide metrology issues as they relate to the life sciences. Issues may include, but are not limited to: development of methodologies to calibrate short-lived radionuclides of interest in nuclear medicine, measurement of decay properties (half-lives, decay energies and probabilities, etc.) of radionuclides used in nuclear medicine and biological research, and development of measurement methodologies for transferring National Measurement Standards to the clinic and research laboratory. The Working Group will facilitate finding solutions to these problems through workshops, publications, electronic communications (i.e., email), and collaborative work. During 2008, a meeting of the Life Sciences Working Group (LSWG) was held at the National Physical Laboratory in Teddington 12-13 November 2008, immediately following the meeting of the Liquid Scintillation Counting Working Group. The meeting was attended by 9 participants from 5 institutions. The format consisted of a number of presentations from each laboratory, followed by a discussion period. The topics covered during the meeting included:

Quality Assurance, Standards, and Metrology Inter-laboratory comparisons Recent standardizations and measurements of radionuclides used in radiation medicine Radionuclide calibrators; and Developing, funding, and communicating the importance of metrology programs in the Life

Sciences Specific action items from previous meetings

Collecting activity calibrator factors for medical radionuclides in different ionization chambers. (Status: An extensive reference list has been collected. Factors are being summarized to be posted on the Life Sciences web page.)

Specific action items that arose from the meeting

Expand the information available on the working group web page Recommend that laboratories with stability data on their ionization chambers actively

measure half lives Publish a review of the determination of calibration figures for radionuclide calibrators

A CD of the presentations, along with those from the Liquid Scintillation Counting Working Group meeting, is being prepared and will be made available from the ICRM Secretary. It is also planned to post the presentations of the LSWG web site. Following the meeting in Bratislava, the next interim meeting of the LSWG is being planned for mid-2010 to take place at the Physikalisch-Technische Bundesanstalt in Braunschweig. J.T. Cessna, Coordinator National Institute of Standards and Technology 100 Bureau Dr., Stop 8462 Gaithersburg, MD 20899-8462 USA [email protected] Phone: +1 301 975 5539 Fax: +1 301 926 7416

22

mailto:[email protected]


Non-Neutron Nuclear Data Working Group (3NDWG): Report, December 2008

Coordinator: Marie-Martine Bé

Key words: decay data; evaluations; nuclear decay data requirements

1. The primary aim of the 3NDWG is to provide the worldwide scientific community with an appropriate

environment for communications between specialists in the field of non-neutron nuclear data measurements and evaluations so that they can learn more about each others’ work, liaise and combine forces to undertake research programmes of mutual interest, and organise multinational efforts to produce recommended sets of non-neutron nuclear data.

2. 3NDWG members continue to be involved in the evaluation efforts of the Decay Data Evaluation Project

(DDEP). Communications between decay data evaluators are encouraged through this project (co-ordinator: E. Browne, [email protected]). Details of this work and the recommended decay data can be found on the Internet: http://www.nucleide.org/DDEP_WG/DDEPdata.htm. A second working meeting of the DDEP was organized in May 2008 by IFIN in Bucharest. Minutes of the meeting can be requested to A. Luca.

3. 3NDWG members continue to evaluate decay schemes for specific actinides and their decay products as

part of an agreed IAEA Coordinated Research Project on “Updated decay data library for actinides” (2005-09). Last meeting was held in October, 2008. Contact: M. A. Kellett (e-mail: [email protected]). Summary Report 2nd coordination meeting, INDC(NDS)-0508

4. Noteworthy achieved or on-going work by 3NDWG members include the following:

(a) issue of a new volume of Monographie BIPM-5 was published in December 2008, it includes both updated and completely new decay scheme evaluations (M.-M. Bé); (b) forthcoming 3NDWG-based workshops include ENSDF- Nuclear Structure Data to be organised by IFIN in Romania, 30 Mars - 3 Avril 2009. (c) Handbook of Nuclear Data for Safeguards : database extensions, August 2008, was published by A.L. Nichols, D.L. Aldama, M. Verpelli, IAEA INDC(NDS)-0534.

5. The work of the 3NDWG was re-endorsed at the 2007 ICRM General Meeting (7 September 2007, Cape Town, South Africa). Alan Nichols (IAEA) relinquished his role as coordinator of the 3NDWG at this meeting; new coordinator is Marie-Martine Bé (LNHB, CEA Saclay, France).

Marie-Martine Bé Phone: +33 1 69 08 46 41 E-mail: [email protected] 10 January 2009

23

http://www.nucleide.org/DDEP_WG/DDEPdata.htm

mailto:[email protected])



LABORATORY RADIOISOTOPE METROLOGY LABORATORY - CNEA, ARGENTINA

NAMES P. ARENILLAS, C. BALPARDO, M. E. CAPOULAT, D. RODRIGUES

ACTIVITY 1. Absolute activity measurements 2. Participation in international comparisons

KEYWORDS Alpha spectrometry, beta spectrometry, coincidence method, data evaluation, data measurement, gas proportional counter, liquid scintillation, NaI well counter, simulation code, TDCR counter

RESULTS 1. Improvement of a HPPC-NaI(Tl) coincidence system with the TAR module. 2. Participation in a TDCR code comparison. 3. Standardization of 241Am, 90Sr/90Y and 67Ga. 4. Beta emission determination in extended sources of 137Cs and 90Sr. 5. Characterization of the Low Geometry Defined Solid Angle System for alpha counting.

PUBLICATIONS “General data analysis code for TDCR liquid scintillation counting” D. Rodrigues, P. Arenillas, M.E. Capoulat, C. Balpardo. Applied Radiation and Isotopes Volume 66, Issues 6-7, June-July 2008, Pages 1049-1054.

IN PROGRESS 1. Improvement of source preparation and characterization for the defined solid angle system for alpha counting. 2. Application of the Anticoincidence Counting and Correlations Technique. 3. Standardization of several radionuclides 4. Efficiency Monte – Carlo calculations of a (HP)Ge detector and a 4π-gamma detector. 5. Participation in the SIR 6. Participation in the 2008/9 International Comparison of Activity Measurements of a solution of 3H organised by BIPM". Ongoing SIR

INFORMATION

SOURCE IN PREPARATION

1. “Standardization of 67Ga by Digital Coincidence Counting”. Roteta M., Balpardo C., Rodrigues D., Arenillas, P.

OTHER RELATED PUBLICATIONS

ADDRESS Comisión Nacional de Energía Atómica, Centro Atómico Ezeiza. Av. del Libertador 8250 (C.P.1429) - Buenos Aires - ARGENTINA Telephone/Fax: (54-11) 6779-8279/8554

e-mail: [email protected]

CONTACT P. A. ARENILLAS

24




NAMES G..L. CERUTTI, C. GUARDO, E. CIRELLO, L. RAMÍREZ, G.R. BOCCA

ACTIVITY Measurement of natural and artificial radionuclides in environmental samples and others

KEYWORDS Gross alpha determination, gross beta determination, liquid scintillation, low-level, radiochemistry, gamma spectrometry

RESULTS 1. Set into operation of an ultra-low background liquid scintillation counter 2. Incorporation of CNEA to the IAEA Network ALMERA (Analytical Laboratories for the Measurement of Environmental Radioactivity) 3. Participation in the IAEA environmental activity comparison (IAEA- CU-2007-03) 4. Activity determinations of 90Sr in 200 samples of milk powder, maize, soybean meal, wheat, cheese, fish and meat. 5. Activity determinations of 241Am and 239Pu in 200 milk powder, maize, soybean meal, wheat and cheese samples. 6. Analysis in samples of water by high resolution gamma spectrometry 7. Analysis of 60Co and 137Cs by NaI(Tl) detector for surface contamination testing 8. Routine measurements and certifications of non radioactive contamination in exported foodstuffs (about 3200 samples)

PUBLICATIONS

IN PROGRESS Implementation of a quality system based on Guide ISO 17025.

INFORMATION



ADDRESS Comisión Nacional de Energía Atómica, Centro Atómico Ezeiza. Av. del Libertador 8250 (C.P.1429) - Buenos Aires - ARGENTINA e-mail: [email protected] Telephone/Fax: (54-11) 6779-8408

CONTACT G. L. CERUTTI

25




NAMES G.L. CERUTTI, F.A. IGLICKI, C. GUARDO.

ACTIVITY 1. Preparation, quality control, standardisation and issue of : - Standard point sources and solutions of several radionuclides for gamma-ray and alpha spectrometry. - Large area standard sources of alpha, beta and gamma emitters. 2. Development of standard sources.

KEYWORDS Gamma-ray spectrometry, source preparation, radioactive standards

RESULTS 1. Preparation and calibration of 200 radioactive sources. 2. Re-accreditation of “Preparation and calibration of radioactive standards” by the Argentinean Accreditation Body (OAA) 3. Development of sealed gamma emitter sources in acrylic cylinders and open point sources of alpha emitters 4. Development of WINGELI program for activity and efficiency calculations 5. Participation in a comparison organised by BIPM for 85Kr

PUBLICATIONS

IN PROGRESS 1. Development of simulated water standards. 2. Characterisation of a metrological ionisation chamber

INFORMATION



ADDRESS Comisión Nacional de Energía Atómica, Centro Atómico Ezeiza. Av. del Libertador 8250 (C.P.1429) - Buenos Aires – ARGENTINA e-mail: [email protected]

Telephone/Fax: (54-11) 6779-8408

CONTACT G. L. CERUTTI

26




NAMES M.I. MILA, M. CAPOULAT, L. BERGAMINI, M. ROLDAN

ACTIVITY 1.Routine metrological assessment of radionuclide calibrators used in Nuclear Medicine.

2. Preparation, quality control and standardisation of standard sources for Nuclear Medicine.

3. Organisation of comparisons for activity measurements among Nuclear Medicine Centres in Argentina.

KEYWORDS Ionisation chamber, life sciences.

RESULTS 1. Assessment of 13 Nuclear Medicine Centre calibrators for 18F, 32P, 67Ga, 90Y, 99mTc, 99Mo, 131I and 153Sm.. 2. Assessment of 34 commercial calibrators for 67Ga, 99mTc, 111In, 131I, 153Sm and 32P. 3. Preparation and calibration of 49 radioactive solutions to perform the assessment of calibrators. 4. Re-accreditation of “Activimeters calibration” by the Argentinean Accreditation Body 5. Development of a new method for the calibration of ionization chambers (13N). 6. Participation in the “XVI Congreso de la Asociación Argentina de Biología y Medicina Nuclear”, Buenos Aires, Argentina. October 31 – November 02, 2008.

PUBLICATIONS

IN PROGRESS Re-calibration of the LMR’s Reference Ionization Chamber.

Calibration of the LMR’s Reference Ionization Chamber for 11C

INFORMATION



ADDRESS Comisión Nacional de Energía Atómica, Centro Atómico Ezeiza. Av. del Libertador 8250 (C.P.1429) - Buenos Aires - ARGENTINA Telephone/Fax: (54-11) 6779-8491/8554


CONTACT M. I. MILA

27



LABORATORY BEV – Bundesamt für Eich- und Vermessungswesen, AUSTRIA

NAMES F:J. Maringer, R. Brettner-Messler, M. Kreuziger, P. Michai

ACTIVITY Metrological and applied research

Participation in international comparison - EURAMET, CCRI(II) and bilateral comparisons

Participation in ICRM LLRMT, Braunschweig, Germany, Sep. 2008

Routine certification and legal verification (medical activity meter, surface contamination monitors)

Calibration services

KEYWORDS National Metrology Institute

Radioactivity laboratory with low-level facilities

Calibrated 4πγ ionisation chambers

HPGe detectors for gamma-ray spectrometry

Low-level anti-compton HPGe gamma-ray spectrometer

Multiwire proportional chamber

Radon ionisation chambers

RESULTS CCRI(II)-K2.Cs-134

CCRI(II)-K2.Ce-139

Comparison in radon activity concentration in air

Comparison in gamma-ray spectrometry

Monte Carlo calculations of ionisation chamber and HPGe detector response to emerging gamma and beta emitters

PUBLICATIONS F.J. Maringer (2008): Radon in Austria: metrology and practice. KERNTECHNIK, 73, 127-130; ISSN 0932-3902

Maringer, FJ, Kaineder, H, Nadschlaeger, E, Sperker, S (2008): Standards and experience in radon measurement and regulation of radon mitigation in Austria. APPL RADIAT ISOTOPES, 66, 1644-1649; ISSN 0969-8043

T. Vidmar, I. Aubineau-Laniece, M.J. Anagnostakis, D. Arnold, R. Brettner-Messler, D. Budjas, M. Capogni, M.S. Dias, L-E. De Geer, A. Fazio, J. Gasparro, M. Hult, S. Hurtado, M. Jurado Vargas, M. Laubenstein, K.B. Lee, Y-K. Lee, M-C. Lepy, F-J. Maringer, V. Medina Peyres, M. Mille, M. Moralles, S. Nour, R. Plenteda, M.P. Rubio Montero, O. Sima, C. Tomei, G. Vidmar (2008): An intercomparison of Monte Carlo codes used in gamma-ray spectrometry. APPL RADIAT ISOTOPES, 66, 764-768; ISSN 0969-8043

Seidel C., Gruber V., Baumgartner A., Idinger J., Fürst A., Maringer F.J. (2008): Impact of environmental change on the radioecology of spruce trees in Upper Austria. In: Proceedings of IRPA 12, Oct 19-24, 2008, Buenos Aires, Argentina. International Radiation Protection Association.

IN PROGRESS Development of a primary standard for particle emission rate for large area sources

28


Research co-operation with: • BOKU - University of Natural Resources and Applied Life Science Vienna • TU VIE - Technical University of Vienna • ARC - Austrian Research Centers Seibersdorf • IAEA – International Atomic Energy Agency 3 thesis and 2 research projects in the field of radionuclide metrology in progress

INFORMATION 82 CMC‘s in radioactivity measurements


Planned participation (2009) in CCRI(II).K for Lu-177, Pb-210


Andreas Steurer, Arnold Leitner, Franz Josef Maringer (2008): Different Values for Dose Rate Constants in Radiation Protection Literature – Reasons and Consequences in Practice. In: Proceedings of IRPA 12, Oct 19-24, 2008, Buenos Aires, Argentina. International Radiation Protection Association.

Andreas Baumgartner, Andreas Steurer, Franz Josef Maringer (2008): Advance of the Austrian Absorbed Dose to Water Primary Standardisation System. In: Proceedings of IRPA 12, Oct 19-24, 2008, Buenos Aires, Argentina. International Radiation Protection Association.

Gruber, V, Baumgartner, A, Seidel, C, Maringer, FJ (2008): Radon risk in Alpine regions in Austria: risk assessment as a settlement planning strategy. RADIAT PROT DOSIM, online, 1-4; ISSN 0144-8420

Zehetner F., Lair G.J., Maringer F.-J., Gerzabek M.H., Hein T. (2008): From sediment to soil: floodplain phosphorus transformations at the Danube River. BIOGEOCHEMISTRY, 88, 117-126; ISSN 0168-2563

Valeria Gruber, Claudia Seidel, Franz Josef Maringer (2008): Assessment of radon exposure in Austria based on geology and settlement. In: Proceedings of IRPA 12, Oct 19-24, 2008, Buenos Aires, Argentina. International Radiation Protection Association.

ADDRESS BEV – Bundesamt für Eich- und Vermessungswesen Section Ionising Radiation and Radioactivity Arltgasse 35, 1160 Wien, AUSTRIA

CONTACT Assoc. Prof. Dr. Franz Josef Maringer Tel.: +43 1 21110 6372 Fax: +43 1 21110 6000 E-mail: [email protected]

www.bev.gv.at

29


http://www.bev.gv.at/


LABORATORY IAEA Nuclear Data Section, Vienna, Austria;

Serco Assurance, Winfrith Science Centre, Dorchester, UK

NAMES A.L. Nichols (IAEA), M.A. Kellett (IAEA) and R.J. Perry (Serco Assurance)

ACTIVITY Decay data evaluations and database preparation

KEYWORDS Data evaluation, data measurement, 67Ga, 83mKr, 93Zr, 93mNb, 98Tc, 101Rh, 101mRh,109Pd, 115Cd, 115mCd, 132Te, 129mXe, 134mXe, 141Nd, 141mNd, 167Tm, 183Re, 189Ir, 193mIr,194mIr, 194nIr, 208Tl, 207mPb, 212Pb, 212Bi, 215Bi, 212Po, 216Po, 211At, 219At, 219Rn, 220Rn,224Ra, 228Th, 242mAm

RESULTS Decay data evaluations completed in 2008 for the JEFF library: 67Ga, 83mKr,93Zr, 93mNb, 98Tc, 101, 101mRh, 115, 115mCd, 129m, 134mXe, 141, 141mNd, 167Tm,183Re, 189, 193m, 194m, 194nIr, 207mPb

PUBLICATIONS M.A. Kellett, F.G. Kondev and A.L. Nichols, IAEA Coordinated Research Project: Updated Decay Data Library for Actinides, Appl. Radiat. Isot. 66 (2008) 694-700.

IN PROGRESS Decay data evaluations for DDEP: 109Pd, 132Te

Decay data evaluations for IAEA CRP “Updated Decay Data Library for Actinides”: 208Tl, 212Pb, 212, 215Bi, 212, 216Po, 211, 219At, 219, 220Rn, 224Ra, 228Th, 242mAm

INFORMATION A.L. Nichols will retire from the IAEA, end of April 2009.



F.G. Kondev, I. Ahmad, M.P. Carpenter, C. Chiara, J.P. Greene, R.V.F. Janssens, T.L. Khoo, T. Lauritsen, C.J. Lister, E.F. Moore, D. Seweryniak, S. Zhu, S.W. Yates, Z.M. Koening, A.L. Nichols, M.A. Kellett, C.E. Porter and L.K. Felker, Studies of Nuclear Structure and Decay Data Properties of Actinide Nuclei (invited paper), presented at 13th International Symposium on Capture Gamma-ray Spectroscopy and Related Topics (CGS-13), 25 – 29 August 2008, Cologne, Germany.

F.G. Kondev, I. Ahmad, M.P. Carpenter, C.J. Chiara, J.P. Greene, R.V.F. Janssens, M.A. Kellett, C.J. Lister, A.L. Nichols, G. Savard, D. Seweryniak and S. Zhu, Decay Studies of Minor Actinide Nuclides, and Future Opportunities for Improving the Decay Data of Neutron-rich Fission Products, and A. Mengoni, R. Capote, M.A. Kellett and A.L. Nichols, International Efforts to Measure, Model and Evaluate Nuclear Data for Minor Actinides, both presented at Int. Conf. Reactor Physics, Nuclear Power: a Sustainable Resource, PHYSOR-2008, 14 – 19 September 2008, Interlaken, Switzerland.

ADDRESS IAEA, Nuclear Data Section, Department of Nuclear Sciences and Applications, P.O. Box 100, Wagramerstrasse 5, A-1400 Vienna, AUSTRIA

CONTACT Dr Mark A. Kellett ([email protected])

30


Summary of the research program related to radionuclide metrology for the years 2008 and 2009

within the Research Groups “Isotopenforschung” (Isotope Research) and “Kernphysik”

(Nuclear Physics) of the Faculty of Physics at the University of Vienna, Austria Währingerstrasse 17, A-1090 Wien; Tel: +43-1-4277-51754, FAX: +43-1-4277-51752

http://physics.univie.ac.at/index.php?id=627 http://isotopenforschung.univie.ac.at/index.php?id=832

http://physics.univie.ac.at/index.php?id=625 http://kernphysik.univie.ac.at/

[also to be regarded as contribution according to the ICRM standing actions SA1 and SA2]

Some activities of the two research groups concentrate on the improvement and development of atomic and nuclear measuring techniques and data handling procedures for basic physics and interdisciplinary applied physics work with special emphasis on the detection of long-lived radionuclides, particularly in the very-low-level range. Nuclear-decay-counting techniques have been widely replaced by mass-spectrometric techniques with high selectivity and high sensitivity. More detailed information is also provided via the home pages given above. Names: K. Buczak, F. Dellinger, F. Eder, O. Forstner , E. Friedl, H. Friedmann,

R. Golser, J. Gröller, P. Hille, D. Imrich, J. Kühtreiber, W. Kutschera, C. Lederer, St. Lehr, J. Liebl, J. Lukas, M. Martschini, K. Melber, Ph. Müllner, E. Pak, A. Pavlik, A. Priller, F. Quinto, L. Reichart, K. Rumpelmayr, G. Schätzel, P. Steier, S. Tagesen, P. Törnström, H. Vonach, A. Wallner, F. Weninger, E. Wild, G. Winkler

Facilities, projects, tasks: 1. The tandem-accelerator mass-spectrometry facility VERA (Vienna Environmental Research Accelerator) and its use: For details on the experimental equipment see: http://isotopenforschung.univie.ac.at/index.php?id=1571. Accelerator mass spectrometry (AMS) injecting negative ions into a tandem accelerator and stripping them to positive ions is the major tool for research. With AMS, radionuclides are measured by direct atom counting; selectivity is achieved employing energy-, momentum- and velocity-selecting devices (electrostatic, magnetic, velocity and time-of-flight filters) and using ion detectors for counting, discrimination and final energy measurement. The interesting nuclides (with extremely small radioisotope-to-stable-isotope ratios in the 10-10 to 10-16 range) cannot be measured at natural levels through radioactive-decay counting, particularly for small samples in the milligram range, typically containing only 105 to 108 radionuclide atoms. Predominantly isotope ratios are measured relative to appropriate standards.

Typically, in the light-ion region atoms like 14C (5.7×103 a) for radiocarbon dating, atmospheric science, paleoclimatic studies, 10Be (T1/2=1.5×106 a) and

31

http://physics.univie.ac.at/index.php?id=627

http://isotopenforschung.univie.ac.at/index.php?id=832

http://physics.univie.ac.at/index.php?id=625

2

26Al (T1/2=7.2×105 a) [both, e.g., for applications in geology, atmospheric and climate research, in particular employing 26Al/10Be ratios], heavy long-lived radionuclides such as 129I (T1/2 ≈ 1.6×107 a), 236U (T1/2 ≈ 23×106 a) [in natural and anthropogenic environmental samples), 239Pu (2.4×104a) [together with 236U in uranium ores], 244Pu (T1/2 ≈ 81×106 a) [for research on e.g. interstellar medium grains], 242Pu (T1/2 ≈ 3.8×105 a) and 182Hf (T1/2 ≈ (9±2)×106 a) [of interest in astrophysics and geophysics, requiring new isobar separation methods] are counted in natural samples with an excellent suppression of isobaric background. Also, AMS studies with 41Ca and 60Fe atoms were performed. Recently, Laser techniques were tried to assist isobar suppression in AMS. Recent publications involving AMS measurements are, e.g.: NATURAL AND ANTHROPOGENIC 236U IN ENVIRONMENTAL SAMPLES, Peter Steier, Max Bichler, L. Keith Fifield, Robin Golser, Walter Kutschera, Alfred Priller, Francesca Quinto, Stephan Richter, Michaela Srncik, Philippo Terrasi, Lukas Wacker, Anton Wallner, Gabriele Wallner, Klaus M. Wilcken, Eva Maria Wild, Proceedings of the 9th International Conference on the Application of Accelerators in Research and Technology, Florence, Italy, September 3-7, 2007; Nucl. Instr. and Meth. B 266 (2008) 2246-2250 APPLICATIONS OF A COMPACT IONIZATION CHAMBER IN AMS AT ENERGIES BELOW 1 MeV/amu, O. Forstner, L. Michlmayr, M. Auer, R. Golser, W. Kutschera, A. Priller, P. Steier, A. Wallner, Proceedings of the 9th International Conference on the Application of Accelerators in Research and Technology, Florence, Italy, September 3-7, 2007; Nucl. Instr. and Meth. B 266 (2008) 2213-2216 ISOBAR SUPPRESSION IN AMS USING LASER PHOTODETACHMENT, O. Forstner, P. Andersson, C. Diehl, R. Golser, D. Hanstorp, W. Kutschera, A. Lindahl, A. Priller, P. Steier, A. Wallner, Proceedings of the XVth International Conference on Electromagnetic Isotope Separators and Techniques Related to their Applications, Deauville, France, June 24-29, 2007; Nucl. Instr. and Meth. B (2008) accepted manuscript, DOI 10.1016/j.nimb.2008.05.080 MEASUREMENT OF THE STELLAR CROSS SECTIONS FOR THE REACTIONS 9Be(n,γ)10Be and 13C(n,γ)14C via AMS, A. Wallner, L. Coquard, I. Dillmann, O. Forstner, R. Golser, M. Heil, F. Käppeler, W. Kutschera, A. Mengoni, M. Paul, A. Priller, P. Steier, Journal of Physics G 35 (2008) 014018 40Ca(α,γ)44Ti AND THE PRODUCTION OF 44Ti IN SUPERNOVAE, C. Vockenhuber, C.O. Ouellet, L.-S. The, L. Buchmann, J. Caggiano, A.A. Chen, H. Crawford, J.M. D’Auria, B. Davids, L. Fogarty, D. Frekers, A. Hussein, D.A. Hutcheon, W. Kutschera, A.M. Laird, R. Lewis, E. O’Connor, D. Ottewell, M. Paul, M.M. Pavan, J. Pearson, C. Ruiz, G. Ruprecht, M. Trinczek, B. Wales, and A. Wallner, Journal of Physics G 35 (2008) 014034 MEASUREMENT OF THE THERMAL NEUTRON CAPTURE CROSS SECTION AND THE RESONANT INTEGRAL OF RADIOACTIVE 182Hf, C. Vockenhuber, M. Bichler, A. Wallner, W. Kutschera, I. Dillmann, F. Käppeler, Phys. Rev. C 77 (2008) 044608 SEARCH FOR SUPERNOVA-PRODUCED 60FE IN A MARINE SEDIMENT, C. Fitousse, G.M. Raisbeck, K. Knie, G. Korschinek, T. Faestermann, S. Goriely, D. Lumney, M. Poutivtsev, G. Rugel, C. Waelbroeck, A. Wallner, Physical Review Letters 101 (2008) 121101.

32

3

TOWARDS MORE PRECISE 10Be AND 36Cl DATA FROM MEASUREMENTS AT THE 10-14 LEVEL: INFLUENCE OF SAMPLE PREPARATION, S. Merchel, M. Arnold, G. Aumaître, L. Benedetti, D.L. Bourlès, R. Braucher, V. Alfimov,.P.H.T. Freeman, P. Steier, A. Wallner, Nuclear Instruments and Methods in Physics Research B (2009), in Press Recent projects involving radiocarbon measurements are, e.g., THE ANTHROPOGENIC INFLUENCE ON CARBONACEOUS AEROSOL IN THE EUROPEAN BACKGROUND,

Barbara May, Dietmar Wagenbach, Samuel Hammer, Peter Steier, Hans Puxbaum, Casimiro Pio, Tellus (2009) in press. RADIOCARBON (14C) DATING IN ARCHAEOLOGY AND OTHER FIELDS, W. Kutschera, In: G. Pfenning, C. Normand, J. Magill, T. Fanghänel, eds., Karlsruher Nuklidkarte, Commemoration of the 50th Anniversary, Institute for Transuranium Elements, Karlsruhe (2008) 262-267.

A unique signature to date young carbon-containing samples is utilizing the 14C nuclear bomb peak due to the redistribution of 14CO2 into the other carbon archives on Earth (biosphere, oceans) after the atmospheric Nuclear Test Ban Treaty in 1963. This signal was used, e.g., in collaboration with the Forensic Medicine Department to determine the date of death of people who died in the late 1980s, and is now intended to develop methods at VERA for 14C measurements on ultra-small DNA samples originating from small regions of the human brain. Atomic and molecular physics The molecule H2 (of interest in the cooling phase of the early universe) was unambiguously detected. The existence of rare exotic negatively-charged molecular ions was also studied via AMS:

IDENTIFICATION OF THE SiF62- DIANION BY ACCELERATOR MASS SPECTROMETRY

AND A FULLY RELATIVISTIC COMPUTATION OF ITS PHOTODETACHMENT SPECTRUM, H. Gnaser, R. Golser, M. Pernpointner, O. Forstner, W. Kutschera, A. Priller, P. Steier, A. Wallner, Phys. Rev. A 77 (2008) 053203

The AMS accelerator has also been used for PIXE measurements employing a very low-current proton beam externally:

PIXE MEASUREMENTS OF RENAISSANCE SILVERPOINT DRAWINGS AT VERA P. Milota, I. Reiche, A. Duval, O. Forstner, H. Guicharnaud, W. Kutschera, S. Merchel, A. Priller, M. Schreiner, P. Steier, E. Thobois, A. Wallner, B. Wünschek, R. Golser, Proceedings of the 9th International Conference on the Application of Accelerators in Research and Technology, Florence, Italy, September 3-7, 2007; Nucl. Instr. and Meth. B 266 (2008) 2279-2285

2. Other recent radionuclide measurements and evaluation methods

VERTICAL DISTRIBUTION OF 238Pu, 239(40)Pu, 241Am, 90Sr AND 137Cs IN AUSTRIAN SOIL PROFILES, M. Srncik, E. Hrnecek, P. Steier, A. Wallner, G. Wallner, P. Bossew, Radiochim. Acta 96 (2008) 733–738.

33

4

A major contribution was given to the recently completed "National Survey of Indoor Radon Concentration", a large-scale investigation on the impact of natural radioactivity on the Austrian population [H. Friedmann].

3. Work and co-operation on special reports and standard concepts, training tasks

Co-operation with the Austrian Standards Institute (OENORM) in fields related to radionuclide metrology (e.g., low-level measurements, Radon) is continued. Students' training in the field of general experimental physics, quantum physics, atomic physics, nuclear physics, ion physics and radioactivity measurements is taken care of by the staff of the Isotope Research and Nuclear Physics Group.

4. Participation in international organisations dealing with radionuclide metrology • International Committee for Radionuclide Metrology (ICRM) [G. Winkler] • Consultative Committee for Ionising Radiation (CCRI), Section II (Measurement of

Radionuclides) at the BIPM, Sèvres, France [personal member: G. Winkler] February 2009 Gerhard Winkler

34


LABORATORY European Commission - Joint Research Centre Institute for Reference Materials and Measurements (IRMM) Radionuclide Metrology Sector

NAMES Timotheos Altzitzoglou, Uwe Wätjen

ACTIVITY

APPARATUS

∗ Liquid Scintillation Counting and TDCR ∗ Gamma-ray spectrometry ∗ Nuclear decay data measurement

∗ 4 HPGe detector systems (incl. low background detectors). ∗ 2 Low and Ultra low level liquid scintillation spectrometers. ∗ Facilities for radiochemical separations. ∗ Quantitative radioactive source preparation facilities.

KEYWORDS Beta spectrometry, coincidence method, data evaluation, data measurement, Euromet, gamma-ray spectrometry, life sciences, liquid scintillation, low-level, simulation code, SIR, source preparation, traceability, X-ray spectrometry

RESULTS * U. Wätjen, Y. Spasova, T. Altzitzoglou and H. Emteborg, S. Pommé, Evaluation of EC measurement comparison for 137Cs, 40K and 90Sr in milk powder, Report EUR 23270 EN (2008).

* EUROMET project 907: Measurement of 124Sb activity and determination of photon emission probabilities.

* ICRM LSCWG comparison: Calculation of the activity concentration of a 99Tc solution, measured by the TDCR method.

PUBLICATIONS * T. Altzitzoglou, A. Bohnstedt, Characterisation of the IAEA-152 milk powder reference material for radioactivity with assigned values traceable to the SI units, Appl. Radiat. Isot. 66 (2008) p. 1702-1705.

* T. Altzitzoglou, Radioactivity determination of individual radionuclides in a mixture by liquid scintillation spectra deconvolution, Appl. Radiat. Isot. 66 (2008) p. 1055-1061.

* Sibbens G, Altzitzoglou T, Benedik L, Pomme S, Van Ammel R. Alpha-Particle and Gamma-Ray Spectrometry of a Plutonium Solution for Impurity Determination. Appl. Radiat. Isot. 66 (2008) p. 813-818.

* Vasile M, Altzitzoglou T, Benedik L, Waetjen U. Radiochemical Separation and Determination of 228Ra in Mineral Waters by Low-level Liquid Scintillation Counting. Poster presentation in: LSC 2008: Advances in Liquid Scintillation Spectrometry; 25 May 2008; Davos (Switzerland).

* S. Pommé, T. Altzitzoglou, R. Van Ammel, G. Sibbens, A. Verbruggen, R. Eykens, J. Camps, K. Kossert, H. Janssen, Eduardo García Toraño, T. Durán and F. Jaubert; Experimental determination of the U-233 half-life, Appl. Radiat. Isot. (in press).

IN PROGRESS * EUROMET project no 749: Alpha-particle emission probabilities and energies in the decay of 240Pu; gamma-ray emission probability measurements.

* International comparison of the activity of 3H.

* Development of a new TDCR Liquid Scintillation Counter.

ADDRESS European Commission Joint Research Centre Institute for Reference Materials and Measurements (IRMM) Retieseweg 111, B-2440 Geel, Belgium

35


Tel. +32 14 571 266 - Fax +32 14 584 273 e-mail: [email protected]

CONTACT Timos Altzitzoglou

36




NAMES Mikael Hult, Gerd Marissens, Elisabeth Wieslander, Joël Gasparro, Raquel Gonzalez de Orduña, Necati Çelik

APPARATUS ACTIVITY

Seven HPGe-detectors for ultra low level gamma-ray spectrometry in the underground laboratory HADES. Two low-background HPGe-detectors above ground.

KEYWORDS Underground gamma-ray spectrometry, anti-coincidence method, data evaluation, data measurement, low-level, NaI well-type counter, neutron measurement, simulation code, SIR, source preparation, Plastic Scinillators, muon shield, In-115, Sn-122, Ta-180m,

RESULTS * Results from 3rd experiment at JET aiming at quantifying the loss of charged particles from the plasma

* Results from 4th experiment to use radionuclides as a means to check authenticity of organic farming

* Measurements of rare decays from 180Tam and ECEC of 112Sn and ββ of 124Sn.

* Determination of the half-life and Q-value of the decay with Nature's lowest Q-value: 115In(β− 57 eV) 115Sn*

* Radiopurity measurements of various materials for the GERDA experiment and ultra low-background detector development in HADES.

* Radium in water

PUBLICATIONS * Hult, Gasparro, Lindahl, Marissens, Fessler, Johnston. On the use of mercury as a means of detecting background sources in low-level gamma-ray spectrometry. Appl. Radiat. Isot. 66/6-7 (2008)829.

* Lövestam, Hult, Fessler, Gasparro, Kockerols, Okkinga, Tagziria, Vanhavere and Wieslander "Neutron fluence spectrometry using disk activation", Radiation Measurements (2009) in press.

* Wieslander, Hult, Bonheure, Arnold, Laubenstein, Marissens and Vermaercke, "Low-level gamma-ray spectrometry for analysing fusion plasma conditions", NIM-A 591(2008)383.

* Gasparro, Hult, Johnston, and Tagziria "Monte Carlo modelling of Ge crystals that are tilted and have rounded front edges" NIM-A 594(2008)196.

* Bonheure, Wieslander, Hult, Gasparro, Marissens, Arnold, Laubenstein, Popovichev, Murari, Lengar, "Mega-Electron-Volt Ion Loss Measurements in JET D-3He Plasmas Using Activation Technique" Fusion Science and Technology53-3 (2008)806.

* Vidmar et al. "An intercomparison of Monte Carlo codes used in gamma-ray spectrometry". Appl. Radiat. Isot. 66(2008)764.

* Wieslander, Hult, Marissens, Gasparro and Misiaszek " The Sandwich spectrometer for ultra low-level γ-ray spectrometry", Appl. Radiat. Isotop. Accepted for publication

* Budjáš, Laubenstein, Hult et al. "γ-ray spectrometry of ultra low-levels of radioactivity for the GERDA experiment". Appl. Radiat. Isotop. Accepted for

37


publication

* Hult, Wieslander, Marissens, Gasparro and Misiaszek and Wätjen. " Search for the radioactivity of 180mTa using an underground sandwich spectrometer" Appl. Radiat. Isotop. Accepted for publ.

IN PROGRESS * Decay data for long-lived radionuclides and double beta decay

* Neutron cross sections of Re

* 4th experiment for plasma characterisation at JET using activation of metal discs

* Environmental radioactivity

* Intercomparisons, reference materials and metrology

* Ultra low background detector developments

ADDRESS European Commission Joint Research Centre Institute for Reference Materials and Measurements (IRMM) Retieseweg 111, B-2440 Geel, Belgium Tel. +32 14 571 269 - Fax +32 14 584 273 e-mail: [email protected]

CONTACT Mikael Hult

38




NAMES S. Pommé, G. Sibbens, T. Altzitzoglou, R. Van Ammel, J. Paepen, T. Vidmar, U. Wätjen

ACTIVITY Primary standardisation of activity and determination of nuclear decay data

KEYWORDS Alpha spectrometry, coincidence counting, 4πCsI(Tl)-sandwich spectrometer, data evaluation, data measurement, defined solid angle (alpha and X-ray) counting, EURAMET projects, gamma-ray spectrometry, gas proportional counting (atmospheric, pressurised), ionisation chamber, life sciences, liquid scintillation, NaI well-type counter, simulation code, SIR, source preparation (quantitative drop deposition, IRMM source drying device, vacuum evaporation and electrodeposition), traceability, X-ray spectrometry

RESULTS * U. Wätjen, Y. Spasova, T. Altzitzoglou, H. Emteborg and S. Pommé, Evaluation of EC measurement comparison for 137Cs, 40K and 90Sr in milk powder, Report EUR 23270 EN (2008), ISBN 978-92-79-08500-0.

* EUROMET project 907: Measurement of 124Sb activity and determination of photon emission probabilities.

PUBLICATIONS * S. Pommé and G. Sibbens, Alpha-particle counting and spectrometry in a primary standardisation laboratory, Acta Chimica Slovenica 55 (2008) 111-119.

* S. Pommé, J. Camps, R. Van Ammel and J. Paepen, Protocol for uncertainty assessment of half-lives, J. Radioanal. Nucl. Chem. 276 (2008) 335-339.

* S. Pommé and Y. Spasova, A practical procedure for assigning a reference value and uncertainty in the frame of an interlaboratory comparison, Accreditation and Quality Assurance 13 (2008) 83-89.

* S. Pommé, E. García-Toraño, G. Sibbens, S. Richter, R. Wellum, A. Stolarz and A. Alonso-Muñoz, 234U/235U activity ratios as a probe for the 238U/235U half-life ratio, J. Radioanal. Nucl. Chem. 277 (2008) 207-210.

* S. Pommé, Cascades of pile-up and dead time, Appl. Radiat. Isot. 66 (2008) 941-947.

* G. Sibbens, T. Altzitzoglou, L. Benedik, S. Pommé, R. Van Ammel, α-particle and γ-ray spectrometry of a plutonium solution for impurity determination, Appl. Radiat. Isot. 66 (2008) 813-818.

IN PROGRESS * Half-life determination of 55Fe, 54Mn, 109Cd, 233U, 235U, 238U.

* Development of the new reference ionisation chamber.

* Uncertainty calculations for counting at defined solid angle.

* Development of software for 4πγ-counting.

* Improvement of ALPHA program for deconvolution of alpha-particle spectra.

INFORMATION http://www.irmm.jrc.be/html/activities/radionuclide_metrology/index.htm


* S. Pommé, J. Camps, G. Sibbens, Y. Spasova, Some modifications to Sima's model for total efficiency calculation of well-type photon detectors, J. Radioanal. Nucl. Chem. (2009).

* S. Pommé, T. Altzitzoglou, R. Van Ammel, G. Sibbens, R. Eykens, S. Richter, J. Camps, K. Kossert, H. Janssen, E. García-Toraño, T. Durán, F. Jaubert,

39


Experimental determination of the 233U half-life.

* S. Pommé, Detection efficiency calculation for photons, electrons and positrons in a well detector; Part I: Analytical Model, Nucl. Instr. and Meth. A (2009).

* S. Pommé, G. Sibbens, T. Vidmar, J. Camps, V. Peyres, Detection efficiency calculation for photons, electrons and positrons in a well detector; Part II: analytical model versus simulations, Nucl. Instr. and Meth. A (2009).

* J. Paepen, T. Altzitzoglou, R. Van Ammel, G. Sibbens, S. Pommé, Half-life measurement of 124Sb.

* G. Sibbens, S. Pommé, E. García-Toraño, H. Janssen, R. Dersch, A. Martín Sánchez, E. Leblanc, T. Semkow , Alpha-particle emission probabilities in the decay of 240Pu.

*J. Paepen, E. Boogers, A charge-sensitive preamplifier and signal mixer for 2-wire proportional counters.

* R. Van Ammel, J. Paepen, S. Pommé, G. Sibbens, Measurements of the half-life of 54Mn.

* C. Michotte, S. Courte, G. Sibbens, J. Camps, J. Paepen, Study of self-attenuation in a solution of 237Np measured in ionization chambers.

ADDRESS European Commission Joint Research Centre Institute for Reference Materials and Measurements (IRMM) Retieseweg 111, B-2440 Geel, Belgium Tel. +32 14 571 289 - Fax +32 14 584 273


CONTACT Stefaan Pommé

40




NAMES Ljudmila Benedik, Mirela Vasile, Yana Spasova, Timotheos Altzitzoglou, Uwe Wätjen

ACTIVITY * development of reference materials

* organisation of measurement comparisons for EU member state laboratories monitoring radioactivity in the environment and food (ICS-REM)

* facilities for radiochemical separations

* quantitative radioactive source preparation facilities

* large solid angle �-particle spectrometers

* primary standardisation equipment when needed

* HPGe detector systems and LSC when needed

KEYWORDS Intercomparisons, proficiency tests, reference materials, traceability, environmental monitoring, source preparation, radiochemistry, low-level, liquid scintillation, alpha spectrometry, beta spectrometry, gamma-ray spectrometry,

RESULTS * ICS-REM intercomparison "Ra and U in mineral waters" completed (3 mineral waters, 226Ra, 228Ra, 234U and 238U, 45 laboratories participated)

* Workshop for laboratories participating in three ICS-REM comparisons for radioactivity organised at IRMM, Geel, 10-12 June, 2008 (50 participants)

* Development of a novel radiochemical method for the sequential determination of 210Po and uranium radioisotopes in water with alpha-particle spectrometry

PUBLICATIONS * U. Wätjen, Y. Spasova, T. Altzitzoglou, H. Emteborg and S. Pommé, Evaluation of EC measurement comparison for 137Cs, 40K and 90Sr in milk powder, Report EUR 23270 EN (2008), ISBN 978-92-79-08500-0.

* U. Wätjen, Y. Spasova and T. Altzitzoglou, Measurement comparisons of radioactivity among European monitoring laboratories for the environment and food stuff, Appl. Radiat. Isot. 66 (2008) 742-749.

* S. Pommé and Y. Spasova, A practical procedure for assigning a reference value and uncertainty in the frame of an interlaboratory comparison, Accreditation and Quality Assurance 13 (2008) 83-89.

* U. Wätjen, European measurement comparisons of environmental radioactivity, in: Nuclear Proficiency Testing, Proc. of the 1st Intern. Workshop, eds. E. Cincu, I. Manea and M. Woods, AIP Conf. Proc. 1036 (2008) 85-99.

* Y. Spasova, U. Wätjen and T. Altzitzoglou, European measurement comparison of 137Cs, 40K and 90Sr in milk powder, J. Radioanal. Nucl. Chem. 277 (2008) 211-215.

* M. Vasile and L. Benedik, On the determination of 228Ra, 210Po, 234U and 238U in mineral waters, Report EUR 23683 EN (2008), ISBN 978-92-79-11126-6.

* U. Wätjen (ed.), Participants' workshop – ICS-REM comparisons for radioactivity determination in the environment and food, June 10-12, 2008 – Presentations, Proceedings on CD-ROM (2008).

41


IN PROGRESS * Development of reference material IRMM-426 "wild berries" certified for activity of 137Cs, 40K and 90Sr

* U. Wätjen, L. Benedik, M. Vasile, Y. Spasova and T. Altzitzoglou, Evaluation of EC measurement comparison for 226Ra, 228Ra, 234U and 238U in three mineral waters, EUR report

* Y. Spasova, L. Benedik, M. Vasile, M. Beyermann, U. Wätjen and S. Pommé, 234U and 238U in mineral water – reference value and uncertainty evaluation in the frame of an interlaboratory comparison, J. Radioanal. Nucl. Chem.

* M. Vasile, T. Altzitzoglou, L. Benedik, Y. Spasova and U. Wätjen, Radiochemical separation and determination of 228Ra in mineral waters by low-level liquid scintillation counting, Radiocarbon

* L. Benedik, M. Vasile, Y. Spasova and U. Wätjen, Sequential determination of 210Po and uranium radioisotopes in drinking water by alpha-particle spectrometry, Appl. Radiat. Isot.

ADDRESS European Commission Joint Research Centre Institute for Reference Materials and Measurements (IRMM) Retieseweg 111, B-2440 Geel, Belgium Tel. +32 14 571 882 - Fax +32 14 584 273 e-mail: [email protected]

CONTACT Uwe Wätjen

42



LABORATORY SCK·CEN, Low Level Radioactivity Measurements (SA1/SA2)

NAMES C. Hurtgen, F. Verrezen.

ACTIVITY Gross alpha and beta, 3H, 14C, 89-90Sr, 131I, 210Po, 226Ra and actinides activity measurements in environmental samples Assay of actinides ( Th, U, Pu, Am...) in biological samples (urine, faeces) and environmental samples (water, sediment, soil ...) by alpha spectrometry and by KPA for U.

Assay of 14C, 63Ni, 99Tc, 129I in low level waste

KEYWORDS Alpha spectrometry, bioassay, environmental control, gas proportional counter, liquid scintillation, low-level, radiochemistry.

RESULTS Comparative study of selected scintillation cocktails.

PUBLICATIONS Verrezen, F., Loots, H., and Hurtgen C. (2008). “A performance comparison of nine selected liquid scintillation cocktails.” Appl. Radiat. Isot. 66(6-7): 1038-1042. Verrezen, F., Loots, H., and Hurtgen C. (2008). "A Performance Comparison of Nine Selected Liquid Scintillation Cocktails." SCK-CEN BLG-1052.

IN PROGRESS Informatisation and integration of our ZnS α counting chain for low-level global α measurements into the QA system of our laboratory.

ADDRESS Low Level Radioactivity Measurements SCK•CEN Boeretang 200 B-2400 Mol Belgium Telephone: (+32-14) 33 28 31 Telecopier: (+32-14) 32 10 56

E-mail:[email protected] Web: http://www.sckcen.be/lrm

CONTACT C. Hurtgen

43



LABORATORY SCK·CEN, Reactor & Nuclear Measurements (SA1/SA2)

NAMES M. Bruggeman, P. Vermaercke, F. Farina, L. Sneyers,

L. Verheyen, W. De Boeck, E. Boogers

ACTIVITY γ−spectrometry, Preparation of Radioactive Standards, Neutron activation analysis with relative NAA and k0 - method Non-destructive assay of nuclear wastes and special nuclear material (γ−spectrometry and neutron counting)

KEYWORDS coincidence counting, gamma-ray spectrometry, gas proportional counter, ionisation chamber, low-level, NaI well counter, neutron measurement, simulation code, source preparation, X-ray spectrometry.

RESULTS • k0-based INAA method to determine 235U/238U ratios in samples in traceamounts;

• MCNP based procedure for the computation of thermal and epithermalself-shielding factors;

• Development of dedicated LIMS for the laboratories Gamma-rayspectrometry and Neutron Activation Analysis;

PUBLICATIONS Leal A., Menezes M., Rodrigues R., Andonie O., Vermaercke P., Sneyers L.- A comparative neutron activation analysis study of common generic manipulated and reference medicines commercialized in Brazil.- In: Applied Radiation and Isotopes, 66:10(2008), p. 1307-1312.- ISSN 0969-8043

Vermaercke P., Robouch P., Sneyers L., De Corte F.- Using synthetic multi-element standards (SMELS) for calibration and quality control of the irradiation facilities in the BR1 reactor.- In: Journal of Radioanalytical and Nuclear Chemistry,, 276:1(2008), p. 235-241.- ISSN 0236-5731

Vermaercke P., Robouch P.- K0-NAA for the Determination of Trace Elements in a Synthetic Material: a Collaborative Study.- In: 1st International Workshop on Nuclear Proficiency Testing, Bucharest, Romania, 6-9 October 2007, New York, United States, American Institute Physics, 2008, p. 149-154

Wieslander JSE, Hult M., Bonheure G., Arnold D., Dombrowski H., Gasparro J., Laubenstein M., Marissens G., Vermaercke P. Low-level gamma-ray spectrometry for analysing fusion plasma conditions.- In: Nuclear Instruments and Methods in Physics Research A, 591:2(2008), p. 383-393

IN PROGRESS Re-determination of some suspicious k0 factors;

ADDRESS Reactor and Nuclear Measurements SCK•CEN, GKD Boeretang 200, B-2400 Mol Belgium Telephone: (+32-14) 33 28 86, Telecopier: (+32-14) 32 10 56 E-mail: [email protected]; [email protected]

Websites: http://www.gammaspectrometry.be/ http://www.k0naa.be/ http://www.nondestructiveassay.be/ http://www.radsources.be/

CONTACT M. Bruggeman, P. Vermaercke

44


http://www.gammaspectrometry.be/

http://www.k0naa.be/

http://www.nondestructiveassay.be/


LABORATORY SCK•CEN, Radio-Chemical Analysis laboratories (RCA) (SA1/SA2)

NAMES L. Adriaensen, M. Gysemans

ACTIVITY • Destructive radiochemical analysis of spent fuels for the determination of burn-up and for spent fuel characterization programs

• Determination of Pu and 241Am concentration in MOX fuels (accredited according to ISO17025).

• Radiochemical analysis of long-lived and radiotoxic nuclides in various types of radioactive waste such as resins, evaporator concentrates, filters, incinerator ashes...

• Study of separation chemistry of actinides and specific radionuclides

• Radiochemical analysis of reactor dosimeters and irradiated reactor materials.

KEYWORDS Alpha spectrometry, beta spectrometry, gamma-ray spectrometry, low-level, NaI well counter, mass spectrometry, radiochemistry

RESULTS • Burn-up determination and spent fuel characterization for the LWR-Deputy program

• Dissolution and separation of thorium in Th-based spent fuels in theframework of LWR-Deputy, a program funded by the EC in FP6

• Optimisation of the radiochemical separation of 63Ni in a stainless steelmatrix

PUBLICATIONS

IN PROGRESS • Dissolution, separation and analysis of 36Cl in radioactive concrete or metal samples

• Dissolution, separation and analysis of 36Cl, 14C, 3H, 63Ni in radioactive graphite samples in the framework of Carbowaste, a project of the 7th EURATOM programme

• Microwave dissolution of different types of waste materials

ADDRESS Radio-Chemical Analysis SCK•CEN Boeretang 200, B-2400 Mol, Belgium Telephone: (+32-14) 33 32 26 Fax: (+32-14) 32 07 55 E-mail: [email protected]

CONTACT L. Adriaensen

45



LABORATORY Laboratório Nacional de Metrologia das Radiações Ionizantes LNMRI/IRD/CNEN

NAMES A. Iwahara, Antônio E. de Oliveira, C.J. da Silva, Estela M.O. Bernardes, P.A.L. da Cruz, J. dos S. Loureiro, José U. Delgado, R. Poledna, M.A.R.R. di Prinzio, Vanessa de Bonis.

ACTIVITY 1- Participation in international comparisons ; 2- Absolute activity measurements ; 3- Traceability program with Nuclear Medicine Services.

RESULTS 1- Standardization of 177Lu, 57Co,233U and 237Np solutions; 2-Comparative performance of 4πβ(LSC)-(NaI(Tl) anti-coincidence and 4πβ(PC)-(NaI(Tl) coincidence systems; 3- Comparison run of activity measurements of 99Tcm, with Nuclear Medicine Services; 4- Participation in the international comparison of 57Co activity measurements organized by International Atomic Energy Agency.

PUBLICATIONS 1- L. Tauhata, A. Iwahara, A.E. de Oliveira, E.A. Rezende, J.A. dos Santos, I.G. Nícoli, F.G. Alabarse, A.M. Xavier. Proficiency test in the determination of activity of radionuclides in radiopharmaceutical products measured by nuclear medicine services in 8 years of comparison programmes in Brazil Appl. Radiat. Isot. 66 (2008) 981-987. 2- Carlos J. da Silva, A. Iwahara, R. Poledna, E.M. de O. Bernardes, M.A.R.R. de Prinzio, José U. Delgado and Ricardo T. Lopes. Standardization of 241Am, 124Sb and 131I by live-timed anti-coincidence counting wiht extending dead time. Appl. Radiat. Isot. 66 (2008) 886-889. 3- Carlos J. da Silva, A. Iwahara, R. Poledna, E.M. de O. Bernardes, M.A.R.R. de Prinzio and Ricardo T. Lopes. Standardization of 67Ga, 51Cr and 55Fe by live-timed anti-coincidence counting wiht extending dead time. Appl. Radiat. Isot. 66 (2008) 231-235.

IN PROGRESS 1- A. Iwahara, R. Poledna, C. J. da Silva, L. Tauhata. Primary activity standardization of 57Co by sum-peak method. Submitted to Applied Radiation Isotopes. 2- A. Iwahara, L. Tauhata, A.E. de Oliveira, I.G. Nícoli, F.G. Alabarse, A.M. Xavier, M.L. de Oliveira, M. F. Koskinas, M.C.M. de Almeida. Proficiency Test for Radioactivity Measurements in Nuclear Medicine. Accepted to be published in Journal of Radioanalytical and Nuclear Chemistry. 3- Primary activity standardization of 177Lu by coincidence and anti-coincidence counting methods. 4- Measurement of activity concentration of a solution of tritiated water in the frame of an international key comparison organized by Bureau International des Poids et Mesures.

ADDRESS Instituto de Radioproteção e Dosimetria, Av. Salvador Allende, s/n, Recreio, CEP 22780-160, Rio de Janeiro, Brasil.Tel: ++55 21 2173 2879 Fax: ++55 21 2442 1605

e-maiL: [email protected]

CONTACT AkiraIwahara

46



LABORATORY Laboratório Nacional de Metrologia das Radiações Ionizantes LNMRI/IRD/CNEN

NAMES E.M.O. Bernardes, J.U. Delgado, M.A.R.R. di Prinzio, Maria C.M. de Almeida, R. Poledna and Ronaldo L. da Silva.

ACTIVITY 1 - Half-life determination. 2 - Impurities study by gamma-ray spectrometry. 3- Determination of photon emission probabilities

RESULTS Measurements of nuclear data parameters in the standardization of 124Sb.

PUBLICATIONS 1- A. Iwahara, J.U. Delgado, R. Poledna, C.J. da Silva, M.C.M. de Almeida, R.L. da Silva. Primary radioactivity standardization and gamma intensities determination of 124Sb. Accepted to be published in Nuclear Instruments and Methods A.

IN PROGRESS 1- Determination of the half-life and photon emission probabilities of 177Lu; 2- Precise Determination of Ge Detector Efficiency Curves for Obtaining Activities in Gamma-Emitters Radionuclides.

ADDRESS Instituto de Radioproteção e Dosimetria, Av. Salvador Allende, s/n, Recreio, CEP 22780-160, Rio de Janeiro, Brazil.Tel: ++55 21 3411 8173 Fax: ++55 21 2442 1605.


CONTACT José U. Delgado

47



LABORATORY Laboratório Nacional de Metrologia das Radiações Ionizantes LNMRI / IRD / CNEN

NAMES Almir F. Clain, A.C.M. Ferreira, A.E. de Oliveira, L. Tauhata, M.E.C. Vianna, Maura J.C. S. de Bragança and Adelaide M.G.F.Azeredo.

ACTIVITY 1- Preparation of the spiked sources of beta, alpha and multi-gamma emitters in water matrix; 2- Participation in international comparison: Analysis of metals impurities in water and sediments. ARCAL RLA1/10, 2008. 3- Participation on meeting of the advisory group on the production characterization of reference materials of terrestrial origin; IAEA, Seibersdorf 2008.

RESULTS 1- Quality control program of environmental laboratories; 2- Preparation of a reference material soil of radionuclides from the uranium and thorium natural series from Poços de Caldas, Brazil; 3- Production of Air Filter Reference Material.

PUBLICATIONS

IN PROGRESS

ADDRESS Instituto de Radioproteção e Dosimetria, Av. Salvador Allende, s/n, Recreio, CEP 22780-160, Rio de Janeiro, Brazil.Tel: ++55 21 3411 8154 Fax: ++55 21 2442 1605. e-mail : [email protected]

CONTACT Luiz Tauhata

48



LABORATORY Laboratory for Radioecology

NAMES Delko Barišić, Željko Grahek, Martina Rožmarić Mačefat, Ivanka Lovrenčić Mikelić, Marijana Nodilo, Tomislav Kardum, Rajko Kušić

ACTIVITY • Measurement of 3H, 89,90Sr and gamma emitters in natural samples • Measurement of 3H, 55Fe, 89,90Sr and gamma emitters in low level liquid

waste • Participation in intercomparison excercises • Monitoring of NPP • Laboratory is acredited according to ISO 17025 • Participation in CIESM MEDITERRANEAN MUSSEL WATCH

(including phase II Po-210 in mussels from the Adriatic sea) • Participation in project of radioactivity monitoring of marine indicator

organisms • Monitoring of radioactivity in Danube river

APPARATUS • Four Ge detectors for high resolution gamma spectrometry (Canberra) • Liquid scintillation analyser Packard TRI-CARB 2770 TR/SL • 2404F AUTOMATIC α/β Low Level Counting System • iMATIC α/β Low Level Counting System • Atomic Absorption Spectrometer 3110 • Alpha spectrometry system, Canberra

KEYWORDS environmental monitoring, determination of radionuclides 3H, 55Fe, 89,90Sr and gamma emitters, low level measurement

RESULTS

PUBLICATIONS

(for last 3 years)

1. Grahek, Željko; Rožmarić Mačefat, Martina; Lulić, Stipe, Isolation of lead from water samples and determination of 210Pb // Analytica Chimica Acta 560 (2006) 1/2 84-93 2. Grahek, Željko; Košutić, Katarina; Rožmarić Mačefat, Martina, Strontium isolation from natural samples with Sr resin and subsequent determination of 90Sr // Journal of Radioanalytical and Nuclear Chemistry 268 (2006) 2 179-190 3. Lovrenčić, Ivanka; Volner, Matija; Barišić, Delko; Popijač, Marina; Kezić, Nikola; Seletković, Ivan; Lulić, Stipe, Distribution of Cs-137, K-40 and Be-7 in silver fir-tree (Abies alba L.) from Gorski Kotar, Croatia. // Journal of Radioanalytical and Nuclear Chemistry 275 (2008) 1 71-79 4. Thé bault, H.; Rodriguez y Baena, A. M.; Andral, B.; Barišić, Delko; Albaladejo, J. B.; Bologa, A. S.; Boudjenoun, R.; Delfanti, R.; Egorov, V. N.; El Khoukhi, T.; Florou, H.; Kniewald, Goran; Noureddine, A.; Patrascu, V.; Pham, M. K.; Scarpato, A.; Stokozov, N. A.; Topcuoglu, S.; Warnau, M, 137Cs baseline levels in the Mediterranean and Black Sea: A cross-basin survey of the CIESM Mediterranean Mussel Watch programme. // Marine Pollution Bulletin 57 (2008) 6-12 801-806 5. Lovrenčić, Ivanka; Barišić, Delko; Oreščanin, Višnja; Lulić, Stipe.In situ determination of radon concentration and total gamma radiation in Kastel Gomilica, Croatia // Nuclear Instruments and Methods in Physics Research Section B - Beam Interactions with Materials and Atoms. 263 (2007) 1 186-190 6. Vaupotič, Janja; Barišić, Delko; Kobal, Ivan; Lulić, StipeRadioactivity and Radon potential of the terra rossa soil // Radiation measurements. 42 (2007) 2 290-297 7. Cuculić, Vlado; Cukrov, Neven; Barišić, Delko; Mlakar, Marina, Uranium in sediments, mussels (mytilus sp.) and seawater of the Krka river estuary // Journal of environmental radioactivity 85 (2006) 1 59-70 8.Cukrov, Neven; Barišić, Delko, Spatial Distribution of 40K and 232Th in Recent Sediments of the Krka River Estuary // Croatica chemica acta 79 (2006) 1 115-118 9. Mikac, Nevenka; Foucher, Delphine; Kwokal, Željko; Barišić, Delko, Mercury and

49

http://bib.irb.hr/prikazi-rad?&rad=239894























radionuclides in sediments of the Kaštela bay (Croatia)- Evaluation of the sediment pollution history // Croatica chemica acta 79 (2006) 1 85-93 10. Oreščanin, Višnja; Lovrenčić, Ivanka; Mikelić, Luka; Barišić, Delko; Matašin, Željka; Lulić, Stipe; Pezelj, Đurđica, Biomonitoring of Heavy Metals and Arsenic on the East Coast of the Middle Adriatic Sea Using Mytilus Galloprovincialis // Nuclear instruments & methods in physics research Section B, Beam interactions with materials and atoms 245 (2006) 2 495-500 11. Oreščanin, Višnja; Mikelić, Luka; Lovrenčić, Ivanka; Barišić, Delko; Mikulić, Nenad; Lulić, Stipe, Environmental contamination assessment of the surroundings of the ex-ferrochromium smelter Dugi Rat, Croatia // Journal of Environmental Science and Health. Part A 41 (2006) 11 2547-2555

IN PROGRESS • Development of methods for uranium and thorium isotopes determination in natural samples by ICP MS

• Development of methods for 3H and 90Sr determination in wines • Development of methods for 210Po determination in mussels

INFORMATION SOURCE

www.irb.hr

IN PREPARATION OTHER RELATED PUBLICATIONS

ADDRESS Laboratory for Radioecology Rudjer Bošković Institute Bijenička 54 10000 Zagreb, Croatia phone: 00385 1 4561 060, or 00385 1 4560 932 fax: 00385 1 4680 205

CONTACT Željko Grahek, [email protected]

50







http://www.irb.hr/



LABORATORY Laboratory for Measurements of Low-level Radioactivity Ruđer Bošković Institute, Zagreb, Croatia

NAMES Bogomil Obelić, Nada Horvatinčić, Ines Krajcar Bronić, Jadranka Barešić, Andreja Sironić, Anita Rajtarić

ACTIVITY • Radiocarbon dating of archaeological, geological and paleontological samples

• Preparation of graphite targets for AMS 14C measurement • Tritium activity measurements of natural waters • Use of stable (2H, 13C, 18O) and natural radioactive isotopes (3H, 14C) in

hydrogeological studies • Use of isotopes in paleoclimatological studies • Use of isotopes in environmental and ecological studies • Monitoring of 14C in biological samples around nuclear power plant • Physico-chemical and isotopic study of processes in karst environment,

particularly in carbonate sediments, and water-sediment interaction • Participation in intercomparison excercises • Participation in IAEA/WMO project: "Global Network of Isotopes in

Precipitation (GNIP) and Isotope Hydrology Information System (ISOHIS)". Data for stations Zagreb and Ljubljana since 1976

• Participation in ICRU project "Key Data for Measurement Standards in the Dosimetry of Ionizing Radiation"

APPARATUS • Vacuum line for chemical preparation of methane from water for 3H measurement

• Electrolytic enrichment line for tritium water samples • Gas proportional counter for measurement of 3H activity • Two vacuum lines for chemical preparation of benzene for 14C

measurement by LSC • Vacuum line for direct absorption of CO2 for 14C measurement by LSC • Quantulus 1220 ultra low-level liquid scintillation counter (LSC) • Vacuum line for preparation of graphite targets from both carbonates and

organic samples

KEYWORDS (anti) coincidence method, data evaluation, data measurement,, environmental monitoring, gas proportional counter, liquid scintillation, accelerator mass spectrometry, dating, low-level, radionuclides C-14, H-3

RESULTS Vacuum line for preparation of graphite targets for AMS measurement of 14C activity has been validated and put into operation, and the first samples have been measured. A system for electrolytic enrichment of water with tritium has been validated. Monitoring of 3H in precipitation and that of 14C in atmospheric CO2 and in biological samples have been continued. Results of dating (14C and 210Pb) of lake sediments from several lakes in the National Park Plitvice Lakes were published, together with other comprehensive isotopic and geochemical analyses of the sediments.

We organized IAEA Regional Training Course on Dating Techniques in Archeometry (within the IAEA Regional project of Technical Cooperation RER1006 "Nuclear Techniques for the Protection of Cultural Heritage Artefacts in the Mediterranean Region"), and Workshop on AMS within the FP6 project AMS-14C "Preparation of carbon samples for 14C dating by the AMS technique".

51

http://isohis.iaea.org/


PUBLICATIONS

in 2008 only

1. Horvatinčić, N; Barešić, J; Babinka, S; Obelić, B; Krajcar Bronić, I; Vreča, P; Suckow, A. Towards a deeper understanding how carbonate isotopes (14C, 13C, 18O) reflect environmental changes: A study with recent 210Pb-dated sediments of the Plitvice Lakes, Croatia. Radiocarbon. 50 (2008) 233-253

2. Mandić, M; Bojić, D; Roller-Lutz, Z; Lutz, HO.; Krajcar Bronić, I. Note on the spring region of Gacka River (Croatia). Isotopes in Environmental and Health Studies. 44 (2008) 201-208

3. Vreča, P; Krajcar Bronić, I; Leis, A; Brenčić, M. Isotopic composition of precipitation in Ljubljana (Slovenia). Geologija (Ljubljana). 51 (2008) 169-182

IN PROGRESS 4. Barešić, J; Horvatinčić, N; Vreča, P; Sironić, A. Distribution of authigenic and allogenic fraction in recent lake sediment: isotopic and chemical composition. Marine and Freshwater Research (2009) in press.

5. Krajcar Bronić, I; Horvatinčić, N; Barešić, J; Obelić, B. Measurement of 14C Activity by Liquid Scintillation Counting. Applied radiation and isotopes. (2009) (in press)

6. Krajcar Bronić, I; Horvatinčić, N; Sironić, A; Obelić, B; Barešić, J; Felja, I. A new graphite preparation line for AMS 14C dating in the Zagreb Radiocarbon Laboratory. Nuclear Instruments and Methods in Physics Research B - Beam Interactions with Materials and Atoms. (2009) in press.

INFORMATION SOURCE

http://www.irb.hr/-ONy8-/en/str/zef/z3labs/lna/

IN PREPARATION


1. Breznik, B; Volčanšek, A; Božnar, M Z; Mlakar, P; Krajcar Bronić, I; Obelić, B. Verification of the dispersion model by airborne carbon 14C. IRPA 12 - Strengthening Radiation Protection Worldwide, Proceedings, Buenos Aires, Argentina : IRPA, 2008.

2. Krajcar Bronić, I; Obelić, B; Sironić, A; Barešić, J; Breznik, B. 14C in biological samples and in the atmosphere around Nuclear Power Plant Krško (NEK) in Slovenia, IRPA 12 - Strengthening Radiation Protection Worldwide: Abstracts, Buenos Aires, Argentina : 180-180

3. Krajcar Bronić, I; Minichreiter, K. New 14C dates of the oldest Early Neolithic settlements in Croatia. Radiocarbon and Archaeology – 5th International Symposium, Program and Abstracts. Zurich, 2008. 79.

ADDRESS Laboratory for Measurements of Low-level Radioactivity (Radiocarbon and Tritium Laboratory) Rudjer Bošković Institute Bijenička 54 10000 Zagreb, Croatia phone: 00385 1 4680219, or 00385 1 4571 271 fax: 00385 1 4680 239

CONTACT Ines Krajcar Bronić, [email protected] 00385 1 4571 271

52
























http://www.irb.hr/-ONy8-/en/str/zef/z3labs/lna/













LABORATORY Czech Metrology Institute

Inspectorate for Ionizing Radiation Prague, Czech Republic

NAMES J. Sochorová , M.Havelka, P. Auerbach APPARATUS 4π(PC)ß-γ coincidence equipment

4π(PPC)X,e-γ coincidence equipment 4π NaI(Tl) detector 4π LS ß-γ coincidence equipment TDCR

RESULTS Software coincidence counting system was used for

more precise setting of coincidence parameters of nuclides with complex decay scheme, eg. 124Sb, 152Eu.

New method for preparation of 124Sb sources containing HCl was developed. Routine standardization of 28 radionuclides

PUBLICATION M.Havelka: Radon-in-water standard

IN PROGRESS Standardization of 3H for international comparison

ADDRESS ČMI - IIZ tel.: +420 266020497

Radiová 1 fax: +420 266020466 CZ-102 00 Praha 10 E-mail: [email protected] Czech Republic

CONTACT P. Dryák

53


LABORATORY Czech Metrology Institute

Inspectorate for Ionizing Radiation Prague, Czech Republic

NAMES P.Dryák, P.Kovář APPARATUS coaxial HPGe detectors for gamma spectrometry

BEGe detector for gamma and X-ray spectrometry Si and Si(Li) detectors for alpha and beta spectrometry DSPs 9660, AIMs 556A, GENIE2000

RESULTS Radionuclide impurities measurement

Environmental samples measurement Standards production checking (activity measurement) Verification, type testing and calibration of alpha, beta and gamma spectrometers used in the Czech Republic, Slovakia and Bulgaria Noble gases standardization Monte Carlo calculation of coaxial Ge and BEGe detectors efficiency True summing corrections calculation

PUBLICATION P.Kovář, P. Dryák, J. Šuráň: Calibration and

verification of noble gases monitors in nuclear facilities IN PROGRESS MC efficiency calculation, true summing corrections calculation ADDRESS ČMI - IIZ tel.: +420 266020497

Radiová 1 fax: +420 266020466 CZ-102 00 Prague 10 E-mail:[email protected] Czech Republic

CONTACT P.Dryák

54


LABORATORY Laboratoire National Henri Becquerel, France

NAMES M.M. Bé, V. Chisté, C. Dulieu

ACTIVITY Evaluation of Radionuclide Decay Data

KEYWORDS data evaluation, 210Tl, 210Bi, 210Po, 252Cf, 139Ce

RESULTS Evaluation of 210Tl, 210Bi, 210Po, 252Cf, 139Ce

http://www.nucleide.org/DDEP_WG/DDEPdata.htm

PUBLICATIONS Monographie BIPM-5 – Table of Radionuclides, Volume 4 Marie-Martine BÉ, Vanessa CHISTÉ, Christophe DULIEU, Edgardo BROWNE, Valery CHECHEV, Nikolay KUZMENKO, Filip G. KONDEV, Aurelian LUCA, Monica GALAN, Andrew PEARCE, Xiaolong HUANG. Table of Radionuclides, Monographie BIPM-5, vol.4, ISBN 92-822-2230-6 (Vol. 4) et ISBN 92-822-2231-4 (CD), CEA/LNE-LNHB, 91191 Gif-sur-Yvette, France and BIPM, Pavillon de Breteuil, 92312 Sèvres, France. Includes : 133I, 133Xe, 133Xem, 135Xem, 139Ce, 206Tl, 210Tl, 210Pb, 210Bi, 210Po, 213Po, 214Pb, 214Bi, 214Po, 217Rn, 218Po, 218At, 218Rn, 221Fr, 222Rn, 226Ra, 227Ac, 232U, 236U, 237Np, 238Np, 239Np, 239Pu, 239U, 241Pu, 246Cm, 252Cf. M.M. Bé, C. Dulieu, V. Chisté

NUCLÉIDE-LARA, Bibliothèque des émissions alpha, X et gamma classées par ordre d’énergie croissante. Rapport CEA-R-6201

V. Chisté , M.M. Bé, C. Dulieu

Evaluation de la chaîne du radium 226. Note technique LNHB 2008/59

IN PROGRESS Evaluation of : 124Sb, 126Sn, 75Se, 186Re, 243Am.

INFORMATION Pre study of : 67Cu, 64Cu, 211At.


Publication of a pocket table of radionuclides, Mini Table de Radionucléides

Publisher : EDP Sciences, ISBN 978-2-86883-973-2: http://www.nucleide.org/news.htm

ADDRESS CE Saclay

LNHB – PC 111

F- 91191 Gif sur Yvette Cedex

Tel : +33 1 69 08 46 41

Fax : +33 1 69 08 26 19

E-mail : [email protected]

CONTACT Marie-Martine Bé

55


LABORATORY Laboratoire National Henri Becquerel

NAMES C. Bobin, B. Censier, C. Thiam (post-doc), J. Bouchard.

ACTIVITY 4πβ−γ coincidence and 4πγ measurements

KEYWORDS (anti) coincidence method, liquid scintillation, NaI well-type counter.

RESULTS

PUBLICATIONS

IN PROGRESS - The implementation of a digital system dedicated to 4πγ NaI(Tl) well-type measurements is ongoing; the aim of this project is to replace the « analog » system (MTR2) currently in use. The digital device combines the counting and the gamma spectrum acquisition using the live time technique. The metrological validation is underway; first results are encouraging.

- A project has started this year to improve the anticoincidence system in use at LNHB with digital technology; the aim of this project is to develop a digital platform that combines a liquid scintillation TDCR system or a proportional counter in the β-channel with a classical γ-channel using the live time technique. The first results obtained with the liquid scintillation part of the digital system are particularly encouraging; in short, the counting are processed as in the MAC3 module with the addition of a variable resolution time and time-to-amplitude measurements.

- In order to improve the knowledge of light production in liquid scintillation counters, a stochastic modelisation based on the GEANT4 Monte Carlo code is underway. The first step of this project is to simulate Cerenkov photons produced by gamma diffusion in photomultiplier windows in a TDCR counter.

INFORMATION



ADDRESS Laboratoire National Henri Becquerel

CEA/Saclay – F-91191 Gif-sur-Yvette Cedex

Tel: 33 1 36 08 29 64

CONTACT Bobin Christophe : [email protected]

Censier Benjamin : [email protected]

Thiam Cheick : [email protected]

Bouchard Jacques : [email protected]

56






LABORATORY LNE- Laboratoire National Henri Becquerel

NAMES Carine Hamon, Laurent Ferreux, Marie-Christine Lépy

ACTIVITY Gamma-ray spectrometry

APPARATUS Coaxial and planar HPGe Detectors

RESULTS Efficiency calibration of HPGe detectors within 0.5 % for point sources.

Efficiency calibration for volume sources

New software (ACORES) for fitting efficiency curves versus the energy taking account of correlations between input data

PUBLICATIONS J. Plagnard, C. Hamon, M. C. Lépy, “Study of scattering effects in low-energy gamma-ray spectrometry”, Applied Radiation and Isotopes 66 (2008) 769-773 M. C. Lépy , J. Plagnard, L. Ferreux,“Measurement of 241Am L X-Ray emission probabilities” Applied Radiation and Isotopes 66 (2008) 715-721

IN PROGRESS Measurement of photon emission probabilities of 126Sn and 126Sb

ADDRESS CEA-LNE/LNHB CEA-Saclay F-91191 Gif-sur-Yvette cedex, FRANCE Tel : +33.1.69.08.24.48 Fax : +33.1.69.08.26.19


CONTACT Marie-Christine Lépy

57



NAMES M. Loidl, M. Rodrigues, E. Leblanc, A. Qasimi

ACTIVITY Development of cryogenic detectors (magnetic calorimeters) for X-ray and beta spectrometry and for activity measurement

KEYWORDS Activity measurement, beta spectrometry, cryogenic detector, data measurement, X-ray spectrometry, 55Fe, 63Ni

RESULTS First measurement of the beta spectrum of 63Ni with a cryogenic detector

PUBLICATIONS

IN PROGRESS Development of magnetic calorimeters for low and medium energy X-ray spectrometry; improved uncertainty on activity measurement

INFORMATION



M. Rodrigues, M. Loidl, E. Leblanc, A. Fleischmann and C. Enss: Development of metallic magnetic calorimeters for X-ray metrology applications,X-Ray Spectrometry (2008) 255 M. Loidl, E. Leblanc, M. Rodrigues, J. Bouchard, B. Censier, T. Branger and D. Lacour: Metallic magnetic calorimeters for absolute activity measurement, Journal of Low Temperature Physics 151 (2008) 1055 M. Rodrigues, E. Leblanc, M. Loidl, J. Bouchard, B. Censier, A. Fleischmann, A. Burck, H. Rotzinger and C. Enss: A metallic magnetic calorimeter for hard X-ray and gamma ray spectrometry, Journal of Low Temperature Physics 151 (2008) 1080 Hannes Rotzinger, Markus Linck, Andreas Burck, Matias Rodrigues, Martin Loidl, Elvire Leblanc, Loredana Gastaldo, Andreas Fleischmann and Christian Enss: Beta spectrometry with magnetic calorimeters, Journal of Low Temperature Physics 151 (2008) 1087 M. Loidl, E. Leblanc, M. Rodrigues, T. Branger, D. Lacour, J. Bouchard and B. Censier: Validation study of a new technique for absolute activity measurement with 4 π solid angle metallic magnetic calorimeters, Applied Radiation and Isotopes 66 (2008) 872

ADDRESS CEA Saclay, DRT/LIST/DETECS/LNHB, 91191 Gif-sur-Yvette, France

CONTACT [email protected], Tel.: + 33 1 6908 4277, Fax: + 33 1 6908 2619

58




NAMES Marie-Christine Lépy, Yves Menesguen

ACTIVITY X-ray Spectrometry

APPARATUS Si(Li) and HPGe Detectors

Tunable monochromatic X-ray source (1-20 keV) (SOLEX)

Synchrotron beam line (SOLEIL)

RESULTS Characterization of a HPGe detector by scanning the absorption edges of the detector components

Measurement of linear attenuation coefficients and transmissions of different materials

PUBLICATIONS Use of tunable monochromatic X-tay sources for metrological studies in the low-energy range at the Laboratoire National Henri Becquerel, Johann Plagnard et Marie-Christine Lépy, Proceedings of the International Conference on Nuclear Data for Science and Technology 2007, 433-436. Accurate efficiency calibration of a low-energy HPGE detector using a monochromatic x-ray source Johann Plagnard, Christophe Bobin et Marie-Christine Lépy X-Ray Spectrometry, 36 (2007) 191-198.

IN PROGRESS Characterization of a reference detector for semiconductor detectors efficiency calibration using a tuneable monochromatic X-Ray source

Characterization of the metrology beam line at the SOLEIL synchrotron facility

ADDRESS LNE/LNHB CEA-Saclay F-91191 Gif-sur-Yvette cedex, FRANCE Tel : +33.1.69.08.24.48 Fax : +33.1.69.08.26.19


CONTACT Marie-Christine Lépy

59



LABORATORY DRT/LIST/DETECS/LNE-LNHB

NAMES BRANGER T. ; LE GARRERES I. ; MORELLI S. ; LACOUR D.

ACTIVITY Metrology in the field of radioactivity

KEYWORDS Radiochemistry, source preparation

RESULTS A comparative study between two drying techniques for the preparation of solid sources has been undertaken in LNE-LNHB: freeze-drying and evaporation using hot dry nitrogen. The radionuclide used for this comparison was51Cr. In order to characterize the influence of self-absorption as function of the deposited mass, coincidence and photon spectrometry measurements were performed.

In the case of the photon spectrometry measurements, no significant difference between the two drying techniques was observed; it should be noted that additional measurements of sources dried under atmospheric pressure gave significantly lower values. Moreover, the fact that no correlation arises depending on the deposited masses is particularly interesting. Because freeze-drying is time-consuming, the system using hot dry nitrogen seems to be better-suited for the preparation of dry sources for photon spectrometry measurements.

By coincidence measurements, a large variability was observed. As expected, when a proportional counter is used, the results confirmed that detection efficiencies for electrons are very sensitive to self-absorption and radioactive homogeneity defects. When comparing the two drying techniques, higher detection efficiencies have been obtained with freeze-dried sources (for masses above 12 mg). Nevertheless, we cannot draw definitive conclusions because unexpected homogeneity defects were encountered on the sources dried with hot-nitrogen jets.

In this comparative study, encouraging results were obtained. However, they have to be confirmed or even improved with additional experiments.

PUBLICATIONS T. Branger, C. Bobin, M.-G. Iroulart, M.-C. Lépy, I. Le Garrères, S. Morelli, D. Lacour, J. Plagnard, 2008, Comparative study of two drying techniques used in radioactive source preparation : Freeze-drying and evaporation using hot dry nitrogen jets, Appl. Radiat. Isot. 66, 685-690

M. Loidl, E. Leblanc, M. Rodrigues, T. Branger, D. Lacour, J. Bouchard, B. Censier, 2008, Valisation study of a new technique for absolute activity measurement with 4π solid angle metallic magnetic calorimeters, Appl. Radiat. Isot. 66, 872-876

IN PROGRESS -

INFORMATION -


-

ADDRESS CEA-SACLAY - LNHB

91191 Gif-sur-Yvette Cedex

CONTACT [email protected]

60




NAMES G. Moutard, L. Ferreux

ACTIVITY

Organisation of national and international interlaboratory comparisons in the field of activity measurements. Low-level activity measurement

APPARATUS Calibrated HPGe, NaI(Tl), Liquid scintillation counters, Well-type ionisation chamber with standard electronics.

HPGe detector with anti-cosmic system

RESULTS Characterization of technically enhanced naturally occurring radionuclides (TENORM) in phosphogypsum (IAEA intercomparison), L. Ferreux, G. Moutard, T. Branger, To be published in the proceedings of ICRM-LL08 meeting

IN PROGRESS An opened intercomparison program is proposed every year by LNE-LNHB. The intercomparison program for 2009 is: -Mass activity measurement of mixtures of gamma emitting radionuclides and 3H with low activity (about 1 Bq.g-1, and 0.1 Bq.g-1, respectively) - Mass activity measurement of mixtures of gamma emitting radionuclides and 3H with high activity (about 20 kBq.g-1, and 10 kBq.g-1, respectively) - Activity measurement of aerosol filters (90Sr, 90Y and 239Pu) with about 10 Bq per radionuclides.

ADDRESS LNE/LNHB CEA-Saclay F-91191 Gif-sur-Yvette cedex, FRANCE Tel. : +33.1.69.08.43.75 Fax. +33.1.69.08.26.19

E-Mail : [email protected], [email protected]

CONTACT Gérard Moutard, Laurent Ferreux

61



LABORATORY Laboratoire Nationl Henri Becquerel

NAMES P. Cassette, F. Jaubert, I. Tartès

ACTIVITY Liquid Scintillation Counting

KEYWORDS Liquid scintillation

APPARATUS Triple coincidence counters with Compton spectrometers

Commercial LS counters

RESULTS Development of TDCR and tracer LS methods

PUBLICATIONS P. Cassette and Phuc Do. The Compton Source Efficiency Tracing method in Liquid Scintillation Counting, a new standardization method using a TDCR counter with a Compton spectrometer. Applied radiation and Isotopes, Vol. 66, Issues 6-7, June-July 2008, p 1026-1032. C. Ivan, P. Cassette, Maria Sahagia. A new TDCR-LS Counter using Channel Photomultiplier tubes. Applied radiation and Isotopes, Vol. 66, Issues 6-7, June-July 2008, p 1006-1011.

IN PROGRESS Development of a new TDCR counter with Compton spectrometer using CPM and data acquisition based on FPGA.

ADDRESS DRT/DETECS/LNHB

CEA-Saclay

F-91191 Gif-sur-Yvette cedex, France

Tel : 33 1 69 08 48 68

Fax : 33 1 69 08 26 19


CONTACT Philippe Cassette

62

http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235296%232008%23999339993%23688275%23FLA%23&_cdi=5296&_pubType=J&view=c&_auth=y&_acct=C000057263&_version=1&_urlVersion=0&_userid=2432700&md5=ef33221b049c0b90798aa1e6c3d36e8a





NAMES P. Cassette, F. Jaubert

ACTIVITY Radon standardization

KEYWORDS Radon

APPARATUS Cryogenic defined solid angle alpha spectrometer

RESULTS Standardization of 222Rn

PUBLICATIONS P. Cassette, M. Sahagia, L. Grigorescu, M.C. Lépy and J.L. Picolo. Standardization of 222Rn by LSC and comparison with α- and γ-spectrometry. Applied Radiation and Isotopes. Vol. 64, 10-11. p 1465-1470.

IN PROGRESS Measurement of 220Rn


CEA-Saclay


Tel : 33 1 69 08 48 68

Fax : 33 1 69 08 26 19



63



NAMES P. Cassette, M. H. Ha-Thi

ACTIVITY Development and characterization of liquid scintillators

KEYWORDS Liquid scintillator, nanoparticles

APPARATUS Monochromatic X-ray source with detector and liquid sample holder

Compton spectrometer coupled with a TDCR LS counter

RESULTS Development of liquid scintillators based on fluorescent nanoparticles

Measurement of the response of scintillators in the 1-10 keV energy range

PUBLICATIONS

IN PROGRESS Test of different fluorescent nanoparticles for the development of new liquid scintillators: CdTe quantum dots, oxide nanoparticles

Characterisation of commercial and locally developed LS cocktails


CEA-Saclay


Tel : 33 1 69 08 48 68

Fax : 33 1 69 08 26 19



64


LABORATORY Laboratoire National Henri Becquerel NAMES J.Plagnard, M.Rosenzweig APPARATUS ACTIVITY Absolute activity measurement of radioactive gas PUBLICATIONS --- IN PROGRESS - Modernization of the measurement system composed by tree

differential proportional counters. - Development of a specific Labview application to control the

measurement process. ADDRESS Laboratoire National Henri Becquerel CEA/Saclay F-91191 Gif-sur-Yvette Cedex, France Tel.: 33 1 69 08 41 78 CONTACT Johann Plagnard e-mail: [email protected]

65


LABORATORY Physikalisch-Technische Bundesanstalt

NAMES Karsten Kossert

ACTIVITY Improvement of methods to calculate the counting efficiency in liquid scintillation counting (CIEMAT/NIST and TDCR), in particular for electron-capture nuclides; Activity standardizations (e.g. Ga-68, Cu-64, H-3) and half-life measurements of long-lived isotopes (Be-10, Ca-41, Sm-147, Lu-176)

KEYWORDS CIEMAT/NIST, TDCR, electron-capture nuclides, LS spectrometry, half-lives

RESULTS

PUBLICATIONS Grau Carles, A., Kossert, K.: Monte Carlo simulation of Auger electron spectra. ARI 67 (2009) 192-196.

Kossert, K., Jörg, G., Lierse v. Gostomski Ch.: Activity standardization of 41Ca by means of liquid scintillation counting. Radiochimica Acta 97 (2009) 1-8.

IN PROGRESS Measurement of the half-lives of Lu-176; Activity standardization of emerging nuclides for nuclear medicine

INFORMATION


Kossert, K., Jörg, G., Nähle, O., Lierse v. Gostomski, Ch.: High precision measurement of the half-life of 147Sm. In preparation.

Chmeleff, J., v. Blanckenburg, F., Kossert, K., Jakob, D.: Determination of the 10Be half-life by multicollector ICP-MS and liquid scintillation counting. To be submitted.


Vidmar, T., Kossert, K., Nähle, O.J., Ott. O.: Application of the sum peak method to activity standardizations of extended 60Co sources. ARI 67 (2009) 160-163

ADDRESS Physikalisch-Technische-Bundesanstalt

Department 6.1

Bundesallee 100

D-38116 Braunschweig Germany

Tel. ++49-531-592-6110

Fax. ++49-531-592-6305

E-mail: [email protected]

CONTACT Karsten Kossert

66




NAMES Ole Naehle

ACTIVITY 4πβ−γ-coincidence counting Liquid Scintillation Counting TDCR

Calibration of large area reference sources (α-, β- and γ-emitters)

KEYWORDS (anti) coincidence method, data measurement, gas proportional counter, liquid scintillation, NaI well-type counter, SIR, TDCR, large area sources, Cu-64

RESULTS Activity standardization of Ce-139, Y-88, Cu-64

PUBLICATIONS Nähle, Ole; Kossert, K.; Klein, R.: Activity Standardization of 22Na. Applied Radiation and Isotopes 66 (2008) 865-871.

Vidmar, T.; Kossert, K.; Nähle, O.; Ott, O.: Application of the sum-peak method to activity standardizations of extended 60Co sources. Applied Radiation and Isotopes 67 (2009) 160-163.

Nähle, Ole; Kossert, K.; Brunzendorf, J.: Study of Light Emission Processes for the Design of Liquid Scintillation Counters. Accepted for publication in Radiocarbon.

Kossert, K.; Ott, O.; Nähle, Ole: Improved techniques for the activity standardization of 109Cd by means of liquid scintillation spectrometry. Accepted for publication in Radiocarbon.

IN PROGRESS Design of a TDCR automated source sampler

Setup of a detector system to characterize large area reference sources

Activity standardization of radioisotopes for medical applications

INFORMATION


Application of the new TDCR system at PTB for the activity standardization of H-3

Source preparation and activity standardization of Sb-124



Department 6.1

Bundesallee 100


Tel. ++49-531-592-6322

Fax. ++49-531-592-6305


CONTACT Ole Naehle

67




NAMES Oliver Ott

ACTIVITY Determination of the gamma emission probabilities of 124Sb (Euromet project 907) and of the alpha emission probabilities of 240Pu (Euromet project 749); determination of emission probabilities of short-lived nuclides like 64Cu

KEYWORDS decay data measurements, Euromet, gamma-ray spectrometry, Sb-124, Cu-64, alpha spectrometry, Pu-240

RESULTS gamma emission probabilities for 124Sb

PUBLICATIONS

IN PROGRESS measurements on 64Cu and other radionuclides, in particular for nuclear medicine

INFORMATION




Department 6.1

Bundesallee 100


Tel. ++49-531-592-6312

Fax. ++49-531-592-6305


CONTACT O. Ott

68




NAMES Dr. Annette Röttger, Anja Honig

ACTIVITY Radon measuring technique:

Radon-220 (Thoron) progeny reference chamber and mixed atmosphere reference chamber (Radon-222, Radon-220 and their progenies) of the PTB. Production and measurement of reference atmospheres.

Online α-spectrometry and offline simultaneous αγ-spectrometry.

KEYWORDS Rn-220, Rn-222, Alpha and Gamma spectrometry, radioactive gas

RESULTS Reference atmospheres for Rn-220, Rn-222 and their progenies. Calibration service.

PUBLICATIONS Annette Röttger, Anja Honig and Dirk Arnold : The German thoron progeny chamber –

concept and application. In print. ARI 2009.

IN PROGRESS Reference atmospheres for Rn-220 (primary standard).

Reference atmospheres for Rn-220 and Rn-220/Rn-222 mixtures with reduced uncertainties.

INFORMATION BMU-Project: Generation and characterisation of reference atmospheres of thoron decay products for the calibration of measuring devices for thoron decay products (St.Sch.-Nr. 4453 by BMU/BfS)

http://www.ptb.de/de/org/6/61/613/index.htm


Low level Rn-222 reference atmospheres.


http://www.ptb.de/de/org/6/61/613/index.htm


Department 6.1

Bundesallee 100


Tel. ++49-531-592-6104

Fax. ++49-531-592-8525


CONTACT Annette Röttger

69




LABORATORY Bhabha Atomic Research Centre, India

NAMES Leena Joseph, Anuradha Ravindra, D.B. Kulkarni

ACTIVITY 1. Participation in international intercomparisons 2. Absolute activity measurements 3. Audit program of activity measurements in nuclear medicine centres

APPARATUS 1. 4π β(PC)- γ(ΝaI) coincidence system. 2. Calibrated 4π Gamma ion chamber. 3. HPGe detector assembly for gamma ray spectrometer. 4. Dose Calibrator, CRC –15 Beta (Capintec Make)

KEYWORDS APMP, I-131, Tc-99m , Co-57, audit, dose calibrator

RESULTS 1. Conducted national audit for I-131 activity measurements with dosecalibrators among 65 nuclear medicine centres (NMC) in the country

2. Conducted audit for Tc-99m activity measurements among seven NMCs in the country

3. Standardized Co-57 solution under IAEA’s CRP 4. Calibrated radioactive sources for users

PUBLICATIONS 1. Quality audit programme for 99mTc and 131I radioactivity measurements with radionuclide calibrators; Leena Joseph, R. Anuradha, D.B. Kulkarni; Applied Radiation and Isotopes 66 (2008) 994 -997

2. Standardization of Silver-110m at BARC, India; Leena Joseph, R. Anuradha, D.B. Kulkarni and V.V. Shaha; MAPAN – Journal of Metrology Society of India, Vol. 22, No. 4, 2007; pp. 225-229

3. International intercomparison of 131I activity measurements, Anuradha R., Leena Joseph, D.B. Kulkarni, Suresh Rao and D.N. Sharma, Journal of Medical Physics, vol. 32/suppl/2007, pg S22

4. Standardization of 134Cs , Leena Joseph, Anuradha R., Kulkarni D.B., presented at National Symposium on Radiation Physics (NSRP-17) at Kolkata during November 14-16, 2007

IN PROGRESS 1. Standardization of 131I under APMP programme 2. Analysis of I-131 audit results 3. Calibration of sources for users.

INFORMATION

ADDRESS Head , Radiation Standards Section, Radiation Safety Systems Division, BARC, Mumbai - 400 085, India Telephone : 25595075 Telefax : 0091(22) 5505151,5519613 E-mail : [email protected]

CONTACT Leena Joseph

70



LABORATORY ENEA - Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti – Italy (INMRI)

NAMES M. Capogni, L. Cozzella, P. De Felice, A. Fazio

ACTIVITY Participation of the ENEA in the SIR for 18F

KEYWORDS SIR (International Reference System)

RESULTS Liquid Scintillation counting system and well-type Ionisation chamber.

18F activity measurements to link the ENEA to the SIR

PUBLICATIONS M. Capogni, P. De Felice, A. Fazio, F. Simonelli, V. D’Ursi, A. Pecorale, C. Giliberti and K. Abbas “Development of a Primary Standard for Calibration of [18F]FDG Activity Measurement Systems” - Institute of Physics Publishing Journal of Physics: Conference Series 41 (2006) 506-513 doi:10.1088/1742-6596/41/1/057

IN PROGRESS Preliminary contacts with the BIPM has been established to identify the technical details of the operation

ADDRESS ENEA Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti Centro Ricerche Casaccia P.0.Box 2400 - Roma (Italy) Phone: +39 06 3048 6628 Fax: +39 06 3048 4650 [email protected]

CONTACT M. Capogni

71


LABORATORY ENEA - Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti – Italy (INMRI).

NAMES M. Capogni, L. Cozzella, P. De Felice, A. Fazio

ACTIVITY 177Lu activity comparison

KEYWORDS CCRI(II) Key-Comparison

RESULTS Liquid Scintillation counting system, 4πβ-γ coincidence system, HPGe γ-ray spectrometer and well-type Ionisation chamber.

CIEMAT/NIST and 4πβ -γ coincidence counting methods; γ-ray spectrometric analysis techniques. 177Lu activity measurements in the frame of an international comparison organised by NIST under the auspices of BIPM.

PUBLICATIONS Sahagia M., Ivan C., Grigorescu E. L., Capogni M., De Felice P., Fazio A., “Standardisation of 65Zn by 4πβ(PC)-γ coincidence counting method with efficiency extrapolation” – Applied Radiation and Isotopes V. 60- Issue 2-4 February April 2004 – pp 423 427.

Capogni M., De Felice P. Fazio A., Latini F., Abbas K., “Development of a primary standard for calibration of 64Cu activity measurement systems” – Applied Radiation and Isotopes V. 66- Issue 6-7 June 2008 – pp 948 953.

IN PROGRESS Contact with the NIST to receive the 177Lu ampoule.

ADDRESS ENEA Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti Centro Ricerche Casaccia P.0.Box 2400 - Roma (Italy) Phone: +39 06 3048 6628 Fax: +39 06 3048 4650 [email protected]

CONTACT M. Capogni

72


LABORATORY National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (NMIJ/AIST)

NAMES Yoshio HINO, Akira YUNOKI, Yasushi SATO and Yasuhiro UNNO

ACTIVITY Calibrations of activity by using the following apparatus; 4πβ(pc)-γ(NaI) and 4πβ(ppc)-γ(Ge) coincidence systems, Calibrated 4πγ ionisation chamber, HP-Ge and Si(Li) detectors, Liquid scintillation system, NaI(Tl) well-type counter, PIPS for α counting and 2π multi wire chamber.

KEYWORDS remote calibration, coincidence method, data measurement, define solid angle measurement, gamma-ray spectrometry, gas proportional counter, ionisation chamber, liquid scintillation, NaI(Tl) well-type counter, radioactive gas, simulation code, SIR, source preparation, traceability

RESULTS (1) A remote calibration service of activity measurement instruments was authorized by the government.

(2) The NMIJ participated in the following international comparisons of activity measurements; Bilateral base comparison with BARC of P-32, APMP.RI(II)-K2.Ba-133 and CCRI(II)-K2.Kr-85.

PUBLICATIONS (1) Y. Sato, T. Yamada, H. Hata, K. Moriyama, A. Yunoki and Y. Hino, ”The detection efficiency variation method for 4πβ-γ coincidence counting using an ink-jet printer”, Applied Rad. and Isotopes 66 (2008) 691-693.

(2) A. Yunoki, T. Yamada, Y. Sato, Y. Kawada and Y. Hino, ”Calibration of 55Fe activity with a lithium drifted silicon detector”, Applied Rad. and Isotopes 66 (2008) 756-759.

IN PROGRESS (1) Test of a remote calibration system using IC tags (RFID) to keep a high quality of calibration at a user’s facility.

(2) Surface contamination monitor for large-area floor by using IP (imaging plate) and sources of various surface emission rates.

(3) Air kerma strength standards for brachytherapy sources.

INFORMATION --


Area sources printed on aluminium plates by an ink jet printer with wide-range surface emission rate.


--

ADDRESS Radioactivity and Neutron Section, Quantum Radiation Division, National Metrology Institute of Japan. Central2,1-1-1 Umezono Tsukuba, Ibaraki 305-8568, JAPAN.

CONTACT Akira Yunoki (e-mail: [email protected])

73


LABORATORY Laboratory of Radioactivity Standards, Radioisotope Centre POLATOM, Institute of Atomic Energy

NAMES Ryszard BRODA

ACTIVITY Technical expert during 7 accreditation audits of calibration laboratories in Poland. Participation in 11th Conference of the Polish Society of Nuclear Medicine and in the BIPM Workshop 2 on CCRI(II) Activity Uncertainties and Comparisons.

KEYWORDS coincidence method, liquid scintillation, SIR, H-3

RESULTS H-3 solution measurement by the TDCR method: the Polya model, estimated uncertainty ±0.5%, frosted vials (better fit of the set of counting points, but the obtained activity was nearly the same as with normal vials)

PUBLICATIONS R. Broda. Some remarks on photon statistics in the LS-counter. Appl. Radiat. Isot., 66, (2008) 1062-1066

IN PROGRESS Participation in the H-3 and Lu-177 intercomparison. Improvement of the quality management system in the laboratory.

INFORMATION Laboratory of Radioactivity Standards, RC POLATOM, IAE, was accredited in 2008 by the Polish Centre for Accreditation


R. Broda, T. Dziel, A. Muklanowicz, A. Listkowska, Ł. Pieńkowski, A. Patocka, E. Kołakowska. Intercomparison of 99Tcm and 131I in Polish hospitals, 2007. (paper for the ICRM2009).

ADDRESS Radioisotope Centre POLATOM, Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland, e-mail: [email protected] tel.: (48 22) 718 07 21 fax: (+48 22) 718 03 50

CONTACT Ryszard Broda

74



LABORATORY Institutul National de C&D pentru Fizica si Inginerie Nucleara « Horia Hulubei » (IFIN-HH)

Radionuclide Metrology Laboratory (LMR)

NAMES Aurelian Luca

ACTIVITY Evaluation of nuclear decay data.

KEYWORDS Data evaluation, 236U, 234Th, 228Ra, 64Cu, 211Bi, 211Po

RESULTS -Evaluation of the nuclear decay data for 236U (published in Monographie BIPM-5), in the frame of the IAEA CRP “Updated decay data library for actinides”

-Organization and participation (one paper presented) at the 2nd Workshop for Radioactive Decay Data Evaluators: Training sessions of the Decay Data Evaluation Project (DDEP-2008), 12-14 May 2008, Bucharest, Romania.

-Participation at the 3rd Research Coordination Meeting of the IAEA CRP “Updated decay data library for actinides”, 8-10 October 2008, IAEA, Vienna, Austria.

-Participation at the IAEA Technical Meeting on “Reference data libraries for advanced nuclear applications”, 10-11 November 2008, IAEA, Vienna, Austria.

PUBLICATIONS M.-M. Bé, V. Chisté, C. Dulieu, E. Browne, V. Chechev, N. Kuzmenko, F. Kondev, A. Luca, M. Galan, A. Pearce and X. Huang – Monographie BIPM-5. Table of Radionuclides (Vol. 4 – A = 133 to 252), Bureau International des Poids et Mesures, Sèvres, France, pages 177-182, 2008.

IN PROGRESS -Evaluation of the nuclear decay data for 234Th and 228Ra, in the frame of the IAEA CRP “Updated decay data library for actinides”.

-Organization and participation at the Workshop for Nuclear Structure and Decay Data Evaluators (ENSDF-2009), 30 March – 3 April 2009, IFIN-HH, Bucharest-Magurele, Romania.

-Participation at the EURAMET TC-IR Project (proposed), ref. 1085: Standardization, decay data measurements and evaluation of 64Cu.

INFORMATION http://www.nipne.ro/ddep2008/ (information about the DDEP-2008 Workshop); http://tandem.nipne.ro/~workshop_ensdf/ (ENSDF-2009 Workshop).


Evaluation of the nuclear decay data for 211Bi and 211Po, in the frame of the IAEA CRP “Updated decay data library for actinides”.


ADDRESS IFIN-HH / LMR, 407 Atomistilor St., Magurele, Ilfov County, PO Box MG-6, Postcode 077125, Romania; phone: +40 21 4046163; Fax: +40 21 4574440; e-mail: [email protected]

CONTACT Dr. Aurelian Luca

75


LABORATORY Institutul National de C&D pentru Fizica si Inginerie Nucleara

“Horia Hulubei” (“Horia Hulubei” National Institute of R&D for Physics

and Nuclear Engineering) IFIN-HH

Radionuclide Metrology Laboratory

NAMES M.Sahagia, A.C.Razdolescu, C.Ivan

ACTIVITY 57Co, 137Cs ( BIPM,RI(II)- K1 Comparison) 57Co (IAEA, CCRI(II)-S6 Comparison). Final audit of Radionuclide Metrology Laboratory for obtaining Accreditation

KEYWORDS Coincidence method , SIR, Supplementary Key comparison

Radionuclide by name ( Co-57, Cs-137)

RESULTS Under evaluation at BIPM and IAEA

PUBLICATIONS M.Sahagia, A.C.Razdolescu, A.Luca, C.Ivan “Assurance of the traceability chain for I-131 measurement” Appl. Radiat. Isot. 6,4(2008)539-544

M. Sahagia, C. Ivan, E.L.Grigorescu, Anamaria Cristina Razdolescu “Standardization of 125I by the Coincidence Method and Practical Applications” Appl. Radiat. Isot., 66,6-7(2008)895-899

IN PROGRESS -Implementation of software for collection and processing of data in the new coincidence system -Participation at the 17th International Conference on Radionuclide Metrology and its Applications (ICRM 2009), 7-11 September 2009, Bratislava, Slovak Republic.

INFORMATION


Participation at the 17th International Conference on Radionuclide Metrology and its Applications (ICRM 2009), 7-11 September 2009, Bratislava, Slovak Republic.


M. Woods, M.Sahagia “The international framework for maintaining equivalence and traceability in radionuclide metrology”, AIP Conf.Proc 1036, 2008, pp.5-11

M.Sahagia, M.Woods “The national dissemination of international measurements” AIP Conf Proc 1036, 2008. pp.12-25

Maria Sahagia » Main research area and international activities of the Radionuclide Metrology Laboratory from IFIN-HH » 2nd Workshop for Radioactive Decay Data Evaluators: Training sessions of the Decay Data Evaluation Project (DDEP-2008), 12-14 May 2008, Bucharest, Romania

ADDRESS Atomistilor Str.407, Magurele, Ilfov County, POB. MG 6, Code 077125, RomaniaTel +40214046163, Fax +40214574432, +40214574440,

E-mail<[email protected]>

CONTACT Dr. Maria Sahagia

76


LABORATORY Institutul National de C&D pentru Fizica si Inginerie Nucleara

“Horia Hulubei” (“Horia Hulubei” National Institute of R&D for Physics

and Nuclear Engineering) IFIN-HH

Radionuclide Metrology Laboratory

NAMES A.C.Wätjen, C.Ivan, P. Cassette, M. Sahagia

ACTIVITY 222Rn standardization by LSC Construction of a new LSC-TDCR system, with 6 Channel Photomltipliers (CPM) Final audit of Radionuclide Metrology Laboratory for obtaining Accreditation

KEYWORDS LSC-TDCR, CPM, CCRI(II)-K2.H3

Radionuclide by name ( Rn-222, H-3)

RESULTS Rn-222, adsorbed in liquid scintillator, was standardized and dead time corrections applied.

CPM based LSC-TDCR was set and first tests were done. A new optical chamber was constructed

PUBLICATIONS C. Ivan, P. Cassette, M. Sahagia “A new TDCR-LS Counter using Channel Photomultiplier tubes “ Appl. Radiat. Isot. 66, 6-7 (2008)1006-1011 A.C.Razdolescu, P.Cassette, M.Sahagia “Measurement of Fe-55 solution activity by LSC-TDCR method” Appl. Radiat. Isot. 66, 6-7 (2008)750-755

IN PROGRESS Standardization of H-3 by LSC-TDCR and participation at the CCRI(II)-K2.H3 key comparison

Complete characterization of the CPM- LSC-TDCR system

INFORMATION


Participation at the 17th International Conference on Radionuclide Metrology and its Applications (ICRM 2009), 7-11 September 2009, Bratislava, Slovak Republic.


ADDRESS Atomistilor Str.407, Magurele, Ilfov County, POB. MG 6, Code 077125, Romania

Tel +40214046163, Fax +40214574432, +40214574440,

E-mail<[email protected]>

CONTACT Anamaria Cristina Wätjen

77


LABORATORY Institutul National de C&D pentru Fizica si Inginerie Nucleara « Horia Hulubei » (IFIN-HH)

Radionuclide Metrology Laboratory (LMR)

NAMES Aurelian Luca, Constantin Ivan, Andrei Antohe

ACTIVITY Gamma-ray spectrometry

KEYWORDS Data measurement, environmental control, Euromet, gamma-ray spectrometry, low-level, simulation code, 124Sb, 222Rn, 64Cu.

RESULTS -Participation at the EUROMET Project 907: “124Sb- Determination of photon emission intensities”.

-Installation and testing of a composed shield (lead, tin, copper) for the new HP Ge detector included in the gamma-ray spectrometry system.

-Energy and efficiency calibrations of the new gamma-ray spectrometry system.

-Participation (two papers presented) at the 5th International Conference on Radionuclide Metrology Low-level Radioactivity Measurements Techniques (ICRM-LLRMT’08), 22-26 September 2008, Braunschweig, Germany.

-Participation at the NPL Environmental Radioactivity Proficiency Test Exercise 2008 (activity measurements for concrete and aqueous samples).

PUBLICATIONS A. Luca, Experimental determination of the uranium enrichment, Romanian Journal of Physics, vol. 53, nos. 1-2, pages 35-39, Bucharest, 2008.

IN PROGRESS -Standardization of 222Rn (glass vials with gas and liquid scintillator) by using gamma-ray spectrometry.

-Implementation and testing of the GESPECOR ver.4.0 software (Monte Carlo simulation code for true coincidence summing corrections and efficiency transfer in gamma-ray spectrometry).

-Participation at the EURAMET TC-IR Project (proposed), ref. 1085: Standardization, decay data measurements and evaluation of 64Cu.

INFORMATION


-Participation at the Workshop of the ICRM Gamma-ray spectrometry Working Group, 23-24 February 2009, Laboratoire National d’Essais (LNE), Paris, France.

-Participation at the 17th International Conference on Radionuclide Metrology and its Applications (ICRM 2009), 7-11 September 2009, Bratislava, Slovak Republic.


ADDRESS IFIN-HH / LMR, 407 Atomistilor St., Magurele, Ilfov County, PO Box MG-6, Postcode 077125, Romania; phone: +40 21 4046163; Fax: +40 21 4574440; e-mail: [email protected]

CONTACT Dr. Aurelian Luca

78


LABORATORY D.I. Mendeleyev Institute for Metrology (VNIIM)

NAMES I.A. Kharitonov, N.I. Karmalitsyn A.V. Zanevsky, S.V. Sepman, E.E. Terechtchenko, I.A. Sokolova, V.N. Motornaya, T.I. Shilnikova

ACTIVITY Standardization of radionuclide solutions, point, surface and volume reference sources.

4πβ(PC)-γ(NaI(Tl)) and KX(0.1mm NaI(Tl))-γ(NaI(Tl))-coincidence counting systems,

4πβ(PC)- and 4πα(PC)-counting system,

4πγ(NaI(Tl))-counting system,

Defined solid angle α-counting system,

calibrated gamma- and X-ray spectrometers.

KEYWORDS coincidence method, define solid angle (ASD) measurement, gamma-ray spectrometry, gas proportional counter

RESULTS Calibration of radionuclides in solution: Na-24, Sr-90, T-3, Co-57, Cs-137, Ba-133, pilot lab of COOMET key comparison Cs-137, development of 4π-gamma method for Eu-152

PUBLICATIONS I.A.Kharitonov, A.V.Zanevsky, V.Milevski, A.Ivaniukovich, P.Oropesa Verdecia, Y.Moreno León and A.Svec “Measurement of activity concentration of radionuclide Cs-137 in a solution (COOMET Project no 386/RU/06)” Metrologia, 2008, 45, Tech. Suppl., 06005

IN PROGRESS Carrying out the COOMET.RI(II)-K2.Eu-152 key comparison of activity concentration measurements of 152Eu

INFORMATION



ADDRESS VNIIM, 19 Moskovsky pr., St. Petersburg 198005, Russia

Phone: (812) 323-96-12

Fax: (812) 113-01-14


http://www.vniim.ru/

CONTACT I.A. Kharitonov

79


LABORATORY Slovak Institute of Metrology

NAMES Jozef Dobrovodský, Robert Hinca, Ivana Praženicová, Anton Švec

ACTIVITY Calibrations of ionization chambers, large area sources and contamination monitors, gamma-ray spectrometry, illicit traffic radiation monitors, releases of contaminated materials and effluents into environment

KEYWORDS Large area alpha and beta source measurements, environmental control, EURAMET, gamma-ray spectrometry, ionisation chamber, life sciences, liquid scintillation, SIR

RESULTS Efficiency curves of ionization chambers, HPGe detectors, large area alpha andbeta radiation detectors, testing of radiation monitors

PUBLICATIONS Švec A.: Analytical efficiency curve for coaxial germanium detectors. Applied Rad.Isot. 66 (2008) 786-791

Švec A.: Interpretation of ionization chamber efficiency curves. Metrologia 46 (2009) 43-46

IN PROGRESS Liquid scintillation counter purchase and the method introduction

INFORMATION Next ICRM Conference and General Meeting will be held in September 7-11, 2009 at SMU in Bratislava, Slovak Republic



Švec A.: Testing and performance evaluation of illicit trafficking radioactivity detectors. Proceedings of the NATO Advanced Training Course, Mugla, Turkey, May 26-30, 2008

Kharitonov I.A., Zanevsky A.V., Milevski V., Ivaniukovich A., Oropesa Verdecia P., Moreno León Y., Švec A.: Measurement of activity concentration of radionuclide Cs-137 in a solution (COOMET Project no 386/RU/06). Metrologia 45 Technical Supplement (Technical Supplement 2008) 06005

ADDRESS Slovak Institute of Metrology, Center for Ionizing Radiations, Karloveská 63, 842 55 Bratislava

Tel.: +421 2 60294 671, Fax.: +421 2 60294 670

e-mail: [email protected], [email protected]

CONTACT Jozef Dobrovodský, Director of the Center

80




LABORATORY National Metrology Institute of South Africa (NMISA) (SA1/SA2)

NAMES Bruce Simpson, Freda van Wyngaardt, Joline Lubbe, Martin van Staden

ACTIVITY Activities undertaken in 2008 • Undertook a 5-week visit to IRMM, Geel, Belgium in February and participated in liquid scintillation related projects (FvW). • Updated all quality management system procedures pertaining to the Radioactivity Standards laboratory. • Attended the ICRM Executive Board meeting held at the Slovak Institute of Metrology (SMU) in Bratislava in May. • Presented a paper in poster form at the Liquid Scintillation Spectrometry Conference (LSC 2008) held at Davos, Switzerland in May. • Reviewed a manuscript (FvW) submitted to an international scientific journal for publication. • In July the RS laboratory was inspected for compliance by the Directorate Radiation Control of the Department of Health. • Participated in the ICRM international comparison of the analysis of 99Tc TDCR data. • Participated in the CCRI(II) Activity Uncertainties and Comparisons Workshop held at the BIPM in September, as well as the CCRI(II) Key Comparisons Working Group and Uncertainties WG meetings. • Started training a new staff member (JL) from October onwards. • The RS laboratory successfully underwent an 18 month assessment for accreditation purposes in December. Submitted revised and additional radioactivity BMCs to the South African National Accreditation System (SANAS) to extend the scope of the laboratory. • A number of 131I capsules, which are administered orally to patients, were measured for clients for verification and calibration purposes. The activity of a 137Cs source was checked for a nuclear medicine facility. Checked a number of ionization chambers maintained at a particle accelerator facility.

Programme for 2009 • Ongoing training of new staff members. • Submit an abstract to the ICRM 2009 conference Scientific Secretariat for consideration by the scientific committee and write a paper if selected. • Review all abstracts submitted for inclusion in the ICRM 2009 conference programme. Attend the ICRM Scientific Committee/EB meetings in March, being held in Bratislava, Slovakia. • Participate in the CCRI key comparisons of 3H activity measurements and 177Lu activity measurements. • Attend the CCRI(II) and CCRI meetings being held at the BIPM in June. • Continue with the installation and commissioning of an HPGe detector and Digital Spectrum Analyzer. • Submit additional radioactivity CMCs for intra- and inter-regional review. • Referee papers accepted for the ICRM 2009 conference. Attend the ICRM 2009 conference being held at the SMU, Bratislava in September. • Undertake an absolute standardization of 18F by liquid scintillation coincidence counting and establish calibration factors for the NMISA ionization chamber. • Continue with a project to develop the necessary infrastructure for the provision of stable liquid scintillation counting standards of 3H and 14C to the South African user community. • Provide radioactivity measurement services to the user community.

81


KEYWORDS coincidence method, activity measurement, ionisation chamber, life sciences, liquid scintillation, source preparation, gamma-ray spectrometry, 131I, 137Cs, 99Tc, 3H, 177Lu, 18F, 14C, 133Ba, 35S

PUBLICATIONS W.M. van Wyngaardt, B.R.S. Simpson and G.E. Jackson, Further investigations of a simple counting technique for measuring mixtures of two pure β-emitting radionuclides. Appl. Radiat. Isot. 66 (2008) 1012-1020.

B.R.S. Simpson and W.M. van Wyngaardt, Absolute activity of 133Ba by liquid scintillation coincidence counting using the 4π(e,X)-γ extrapolation technique. Appl. Radiat. Isot. 66 (2008) 929-933.

W.M. van Wyngaardt and B.R.S. Simpson, Standardization of S-35 by the TDCR efficiency calculation technique. Liquid Scintillation Spectrometry Conference (LSC 2008) proceedings (to be published).

INFORMATION Freda van Wyngaardt was awarded the degree of PhD in June 2008 at the University of Cape Town midyear graduation ceremony. The title of her thesis is: A new liquid scintillation counting technique to resolve mixtures of two pure beta-emitting radionuclides. Electronic copies are available for anyone interested.


Yoshio Hino, Bruce Simpson, Mike Woods and Pierino De Felice, Preface by the Guest Editors for the ICRM 2007 Conference Proceedings. Appl. Radiat. Isot. 66 (2008) 677-679.

ADDRESS Radioactivity Standards Laboratory, NMISA 15 Lower Hope Road, Rosebank 7700

Cape Town, SOUTH AFRICA

CONTACT B.R.S. Simpson

Tel./fax (office) +27 21 686 2759, Tel. (lab) +27 21 685 4325

E-mail : bsimpson@nmisa .org

82


LABORATORY Laboratorio de Metrología de Radiaciones Ionizantes, CIEMAT

NAMES M. GALÁN, J.M. LOS ARCOS

ACTIVITY Decay data evaluations, maintenance and update of the Spanish National Database for Ionizing Radiation (BANDRRI)

KEYWORDS Data evaluation

RESULTS 135Xem evaluation (http://www.nucleide.org7DDEP_WG/DDEPdata.htm)

Participation in DDEP workshop in Bucharest.

PUBLICATIONS Evaluation of 133Xe and 133Xem decay data, Applied Radiation and Isotopes 67 (2009), pp. 170-173

IN PROGRESS 22Na, 59Ni, 94Nb evaluations

INFORMATION



ADDRESS CIEMAT, Ed. 12. Av. Complutense 22, 28040 Madrid (Spain)

Tel.: + 34 91 346 6222 FAX: + 34 91 346 6442

CONTACT [email protected]

83



NAMES Eduardo García-Toraño, Virginia Peyrés Medina

ACTIVITY Standardization of radionuclides by 4πγ counting

KEYWORDS NaI well-type counters

RESULTS

PUBLICATIONS

IN PROGRESS Implementation of a single channel digital acquisition system at the preamplifier level and development of analysis software, including dead time corrections.

INFORMATION



ADDRESS CIEMAT, Ed. 12 Avenida Complutense s/n, 28040 Madrid, Spain.

Tel: +34 91 346 6225, FAX: +34 91 346 6442

CONTACT Eduardo García-Toraño, [email protected]

84




NAMES Eduardo García-Toraño

ACTIVITY Measurement of the half-life of 233U

KEYWORDS Defined solid angle counting

RESULTS Standardization of sources of 233U as a part of an international cooperation project coordinated by IRMM (partners PTB, LNHB, NPL and CIEMAT)

PUBLICATIONS

IN PROGRESS Final data analysis to provide new values for T1/2 of 233U (S. Pommé, IRMM, coordinator). Draft paper already written

INFORMATION



ADDRESS CIEMAT, Ed. 12 Avenida Complutense s/n, 28040 Madrid, Spain

Tel: +34 91 346 6225, FAX: +34 91 346 6442


85



LABORATORY Laboratorio de Metrología de Radiaciones Ionizantes (CIEMAT)

NAMES Virginia Peyrés Medina, Eduardo García-Toraño

ACTIVITY Monte Carlo simulation for efficiency calibration of Ge detectors.

KEYWORDS Gamma-ray spectrometry, Monte Carlo simulation

RESULTS Optimization of a Monte Carlo model by numerical methods

PUBLICATIONS V. Peyres, E. García-Toraño, “Optimization of a Gamma Spectrometry System by Numerical Methods”. Accepted for publication in ARI.

IN PROGRESS

INFORMATION




Tel: +34 91 346 6226, FAX: +34 91 346 6442

CONTACT Virginia Peyres [email protected]

86




NAMES Teresa Durán Ramiro

ACTIVITY Design of a LSC counter based on an Hybrid Photomultiplier

KEYWORDS Liquid scintillation

RESULTS Prototype of LSC system with improved energy resolution for sources of alpha emitters in standard LSC vials

PUBLICATIONS M.T. Durán, (2008) PhD Thesis, “Diseño y construcción de un contador de centelleo líquido basado en fotomultiplicadores híbridos”. Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Spain.

IN PROGRESS

INFORMATION


M.T. Durán, E. García-Toraño, “A Liquid Scintillation Counter with Enhanced Energy Resolution Based on an Hybrid Photomultiplier “



Tel: +34 91 346 6225, FAX: +34 91 346 6442

CONTACT Teresa Durán Ramiro, [email protected]

Eduardo García-Toraño, [email protected]

87





NAMES Miguel Roteta Ibarra

ACTIVITY 4πβ−γ Coincidence Measurements with pressurised proportional counters

KEYWORDS coincidence method

RESULTS

PUBLICATIONS

IN PROGRESS Studies of the new digital acquisition system with two channels, and development of software to analyze data, including correlations. Standardization of 99mTc, 134Eu, 152Eu, 67Ga

INFORMATION




Tel: +34 91 346 6244, FAX: +34 91 346 6442

CONTACT Miguel Roteta Ibarra, [email protected]

88




NAMES Eduardo García-Toraño, Miguel Roteta Ibarra, Virginia Peyrés Medina

ACTIVITY Standardization of radionuclides for Nuclear Medicine use.

KEYWORDS Life sciences

RESULTS Standardization of 99mTc, 131I, 18F by several techniques and dissemination to users.

PUBLICATIONS

IN PROGRESS

INFORMATION




Tel: +34 91 346 6244, FAX: +34 91 346 6442


89



LABORATORY IRA

NAMES Claude Bailat, Yvan Caffari, Youcef Nedjadi,

ACTIVITY Source preparation, coincidence method, gas proportional counter, NaI well counter, liquid scintillation, alpha spectrometry, gamma-ray spectrometry, ionisation chamber, Monte Carlo simulation, Radon measurements.

KEYWORDS Alpha spectrometry, beta spectrometry, (anti) coincidence method, cryogenic detector, data evaluation, data measurement, define solid angle (ASD) measurement, environmental control, Euramet, gamma-ray spectrometry, gas proportional counter, ionisation chamber, life sciences, liquid and plastic scintillation, low-level, NaI well-type counter, neutron measurement, radioactive gas, radiochemistry, simulation code, SIR, source preparation, traceability, X-ray spectrometry

RESULTS

PUBLICATIONS Youcef Nedjadi, Philippe Spring, Claude Bailat, P. Froidevaux, C. Wastiel, and François Bochud, Purification and activity standardisation of a ho-166m solution, Applied Radiation and Isotopes 66 (2008) 900–904.

Pachoud M., Bailat C., Buchillier T., Bochud F., Moeckli R.TH-D-352-07: Absolute Dose Determination of Helical Tomotherapy: Comparison Between Several Methods, Medical Physics, 35(6), p 2995, 2008

IN PROGRESS Validating the TDCR method; Validating the 4pß-4p? coincidence method; Measuring the period of Ho-166m and replacing the reference sources for the Swiss reference ionisation chamber; Characterising a HPGe well-detector for Monte Carlo simulation.

INFORMATION



ADDRESS Institut Universitaire de Radiophysique Appliquée Grand-Pré 1 CH-1007 Lausanne Switzerland Tel : +41 21 6233434 Fax : +41 21 6233435

http://www.chuv.ch/public/instituts/ira

CONTACT Claude Bailat

90


LABORATORY National Radiation Standard Laboratory, Institute of Nuclear Energy Research (NRSL/INER)

NAMES Ming-Chen Yuan, Chien-Yung Yeh, Ing-Jane Chen

ACTIVITY 1. Standardization of I-123 for the radio pharmacist of INER.

2. Calibration and evaluation on the drum counting system of INER for radioactive waste decommissioning.

3. Setting up a new 2πα/β counting system.

4. Performing a proficiency testing feasibility study for measurement of gamma-emitted clearance sample.

KEYWORDS coincidence method, environmental control, gas proportional counter, ionisation chamber, I-123

RESULTS 1. I-123 by coincidence method with relative standard uncertainty 0.87%.

2. The proficiency testing for measurement of gamma-emitted clearance sampleshowed that the En values were below 1 for 80% of the measurement results.

PUBLICATIONS 1. Ming-Chen Yuan, Ing-Jane Chen, Chu-Fang Wang. Primary standardization of 67Ga radiopharmaceuticals, Applied Radiation and Isotopes 66, pp. 976–980, 2008.

2. Ming-Chen Yuan, Chin-Hsien Yeh, Jeng-Jong Wang, Ing-Jane Chen and Chu-Fang Wang. The calibration and evaluation of a radioactive waste drum counting system. 5th International Conference on Radionuclide Metrology Low-Level Radioactivity Measurement Techniques, September 22-26, 2008, Braunschweig, Germany.

3. Tsuey-Lin Tsai, Jeng-Jong Wang, Ing-Jane Chen, Jyi-Lan Wuu and Tzu-Wen Wang. Clearance measurements of metal scraps for nuclear facility at INER in Taiwan. 5th International Conference on Radionuclide Metrology Low-Level Radioactivity Measurement Techniques, September 22-26, 2008, Braunschweig, Germany.

4. Jeng-Jong Wang, Jyi-Lan Wuu and Ing-Jane Chen. Low level radioactivity proficiency testing program in Taiwan. 5th International Conference on Radionuclide Metrology Low-Level Radioactivity Measurement Techniques, September 22-26, 2008, Braunschweig, Germany.

IN PROGRESS 1. Standardization of Sr-89 for the radiopharmacist of INER.

2. Setting up the well type NaI(Tl) integral counting system for the standard of low radioactivity.

3. Organizing the environmental level and the low-intermediate level radioactivity proficiency testing programs.

INFORMATION



ADDRESS Health Physics Division, Institute of Nuclear Energy Research, No.1000, Wenhua Rd., Jiaan Village, Longtan Township, Taoyuan County, 32546, Taiwan (R.O.C.)

CONTACT Ming-Chen Yuan ([email protected])

91


LABORATORY NPL

NAMES Lena Johansson, John Keightley, Andy Stroak, Andy Pearce and John Sephton,

APPARATUS ACTIVITY

4πβ-γ coincidence counting

RESULTS Submissions of Mn-56 and Cs-134 to the SIR.

Production of detailed data from measuring 60Co sources for the purpose of a BIPM comparison of uncertainties originating from the extrapolation to unit efficiency in coincidence counting.

Upgrade of the coincidence counting software, now called BADGERS, which uses extending dead time.

Development of DCC software for investigation of statistics of pulse interval distributions, dual-channel correlation counting and selective sampling.

PUBLICATIONS PhD thesis

IN PROGRESS Standardisation of Cu-64 and Co-60 including submission to SIR.

Installation of automatic source changer for VYNS foils.

INFORMATION


Standardisation of 177Lu


ADDRESS National Physical Laboratory Hampton Road Teddington TW11 0LW United Kingdom Tel: +44 208 943 8587 E-mail: [email protected]

CONTACT Lena Johansson

92



LABORATORY National Physical Laboratory

NAMES Andy Pearce, Arzu Arinc

APPARATUS ACTIVITY

Nuclear decay data evaluation

RESULTS Evaluations of 232U and 232Th

PUBLICATIONS None

IN PROGRESS Evaluations of 228Ac, 106Ru/106Rh

INFORMATION -

IN PREPARATION Evaluations of 231Pa and 223Ra planned.


-

ADDRESS National Physical Laboratory

Hampton Road

Teddington

TW11 0LW

UNITED KINGDOM

Tel +44 208 943 6699

e-mail : [email protected]

CONTACT Andy Pearce

93


Laboratory National Physical Laboratory Name Julian Dean, Arvic Harms, Simon Jerome, Chris Gilligan Activity UK Measurement Infrastructure for Nuclear

Decommissioning: • Development of reference materials • Organisation of comparison exercises • Contributions to guidance on radionuclide metrology in site decommissioning

Keywords Gamma-ray spectrometry; ionisation chamber; low-level; radiochemistry.

Results Comparison of gamma-spectrometry systems at UK nuclear sites

Publications Dean, J. C. J., ‘A UK Comparison for Measurements of Low Levels of Gamma-emitters in Waste Drums’ (submitted for publication in proceedings of ICRM LLRMT conference 2008, Braunschweig)

In progress Second comparison scheduled for 2009 Address National Physical Laboratory

Hampton Road, Teddington, Middlesex, United Kingdom TW11 0LW Tel : +44 208 943 6278

Contact Julian Dean ([email protected])

94


LABORATORY National Physical Laboratory

NAMES Chris Gilligan, Simon Jerome, Arzu Arinc, Lena Johansson and Arvic Harms

ACTIVITY *Organisation of laboratory proficiency testing programmes

*Provision of low-level standards of radioactivity

KEYWORDS Alpha spectrometry, (anti) coincidence method, gamma-ray spectrometry, ionisation chamber, liquid scintillation, low-level, radiochemistry, source preparation, traceability, 3H, 14C, 22Na, 36Cl, 40K, 55Fe, 60Co, 63Ni, 90Sr, 95Zr, 95Nb, 99Tc, 133Ba, 134Cs, 137Cs, 152Eu, 154Eu, 209Po, 226Ra, 228Ra, 234U, 235U, 238U, 237Np, 238Pu, 239Pu, 241Am and 244Cm

RESULTS *Organisation of the NPL Environmental Radioactivity Proficiency Test Exercise 2008 (80 participants; seven sample types (aqueous and solid); nuclides included 3H, 14C, 22Na, 36Cl, 40K, 55Fe, 60Co, 63Ni, 90Sr, 95Zr, 95Nb, 99Tc, 133Ba, 134Cs, 137Cs, 152Eu, 154Eu, 226Ra, 228Ra, 234U, 235U, 238U, 237Np, 238Pu, 239Pu, 241Am and 244Cm) *Provision of 209Po standards

PUBLICATIONS Harms, A.V., Johansson, L., MacMahon, D., 2009. Decay correction of 95Nb. Applied Radiation and Isotopes, in press.

IN PROGRESS *Organisation of the NPL Environmental Radioactivity Proficiency Test Exercise 2009

*UKAS accreditation (ISO Guide 43, part 1; Proficiency Test Exercise Providers)

*Provision of low-level standards of 241Pu

*Development of environmental radioactivity reference materials

*Publications on (i) Data treatment for the NPL Environmental Radioactivity Proficiency Test Exercise, (ii) Visualisation of proficiency test exercise results in Kiri plots, (iii) Combined results of NPL Environmental Radioactivity Proficiency Test Exercises (1989-2008) and (iv) Development of an irradiated concrete reference material

ADDRESS Hampton Road, Teddington, Middlesex, United Kingdom, TW11 0LW

Tel.: +44 208 943 8512


CONTACT Arvic Harms

95


LABORATORY NPL

NAMES Sean Collins, Andy Pearce, Amanda Law

ACTIVITY Gamma Spectrometry

KEYWORDS gamma-ray spectrometry, low-level

RESULTS -

PUBLICATIONS None

IN PROGRESS Procurement of detector optimised for measurement of low energy gamma emissions in environmental level samples.

Investigation of the benefits of neutron-stopping materials in shielding for environmental level germanium spectrometers.

Measurement of challenging radionuclide mixtures in particulate samples.

Comprehensive recalibration of high-precision spectrometers.

INFORMATION -

IN PREPARATION

Preparation of a good practice guide for gamma spectrometry.


-


Hampton Road

Teddington

Middlesex

TW11 0LW

Tel: +44 208 943 8508

CONTACT Sean Collins [email protected]

96



LABORATORY NPL

NAMES Hilary Phillips, Julian Dean, Maria Marouli, Lena Johansson and John Sephton,

APPARATUS ACTIVITY

Internal Gas Counting

RESULTS Monte Carlo modelling of the response of the NPL gas counting system (proportional counters) to radioactivity in gas. Standardisation of 11C by internal gas counting. Submission of 85Kr activity determined for BIPM key-comparison. Calibration of gamma spectrometers and ion chamber systems for 85Kr.

PUBLICATIONS Ph.D. in preparation

IN PROGRESS Participation in the BIPM tritiated water comparison exercise. Calibration of a secondary standard detector for PET nuclides (e.g. 11C). Development of a quality control counter for the 3H counting system. Use of correlation counting for examination of after pulsing.

INFORMATION




CONTACT Hilary Phillips

97


LABORATORY NPL

NAMES John Keightley, Andy Stroak, Michaela Baker, John Sephton

ACTIVITY Ionisation Chambers

KEYWORDS Ion chamber, dose calibrator

RESULTS Radionuclide Calibrator Users Forum (RCUF) meeting held

(minutes on web page) : www.npl.co.uk/rcuf

New electrometer system installed : to be operated in parallel with old system forforeseeable future.

PUBLICATIONS An SI traceable electrometer system for radionuclide metrology

S P Giblin, E. Bakshandier, N E Fletcher, K J Lines, J P Sephton

(in press, NIMA)

IN PROGRESS New calibration factors NPL Secondary Standard (FIDELIS) for I-125 brachytherapy seeds and strands, Ir-192 wires, I-131 capsules.

Validation of new electrometer system.

INFORMATION -

IN PREPARATION

Intercomparison exercise for Y-90 in UK hospitals.


-


Hampton Road

Teddington

Middlesex

TW11 0LW

Tel: +44 208 943 6398

Email: john.keightley:npl.co.uk

CONTACT John Keightley

98

http://www.npl.co.uk/rcuf


LABORATORY NPL

NAMES Arzu Arinc, Lena Johansson, John Sephton, Andy Pearce

APPARATUS ACTIVITY

Liquid Scintillation Counting

RESULTS Radionuclide solutions of 55Fe, 63Ni, 89Sr and 129I standardised by CIEMAT/NIST.

Radionuclide solutions of 209Po, 236Pu, 238Pu and 239Pu standardised by 100% efficiency alpha liquid scintillation counting.

Validation and characterisation of Beckman 2700 TR counter.

PUBLICATIONS

IN PROGRESS Standardisation of 64Cu and 134Cs

INFORMATION


Standardisation of 177Lu



CONTACT Arzu Arinc

99


LABORATORY National Institute of Standards and Technology (NIST)

NAMES R. Fitzgerald

ACTIVITY anticoincidence counting (LS-NaI and HPPC-NaI)

KEYWORDS (anti) coincidence method, 229Th, 57Co

RESULTS Expanded application of anticoincidence method. Standardization of 68Ga/68Ge,229Th and 57Co.

PUBLICATIONS B. E. Zimmerman, J. T. Cessna, and R. Fitzgerald, J. Res. Natl. Inst. Stand. Tech. 113, 265 (2008). (68Ge/68Ga standardization).

IN PROGRESS Standardization of 99mTc solution.

Study LS efficiency for alpha emitters (wall-effect).

INFORMATION



ADDRESS NIST, MS8462, 100 Bureau Dr., Gaithersburg, MD, 20899 USA

CONTACT [email protected] 301-975-5597

100


LABORATORY National Institute of Standards and Technology (NIST)

NAMES R. Fitzgerald

ACTIVITY Development and calibration of an ionization chamber with commercial electrometer and robotic sample loading.

KEYWORDS ionisation chamber

RESULTS Characterized precision, repeatability and stability of system over a wide range ofexperimental conditions.

PUBLICATIONS L. Pibida, R. Fitzgerald, M. Unterweger, M.M. Hammond, D. Golas, Appl. Radiat. Isotopes (2009 in press) (82Sr half life).

IN PROGRESS Study reproducibility of calibration factors during the next few years.

INFORMATION



ADDRESS NIST, MS8462, 100 Bureau Dr., Gaithersburg, MD, 20899 USA

CONTACT [email protected] 301-975-5597

101


LABORATORY NIST

NAMES B. E. Zimmerman, R. Fitzgerald, J. T. Cessna

ACTIVITY Primary standardization of 68Ge

KEYWORDS Anticoincidence counting, liquid scintillation counting, TDCR, CIEMAT-NIST, life sciences, Ge-68, ionisation chamber

RESULTS Standardized solutions, calibration service available

PUBLICATIONS B. E. Zimmerman, J. T. Cessna, and R. Fitzgerald, “Standardization of 68Ge/68Ga using three liquid scintillation counting based methods”, J. Res. Nat. Inst. Stand. Technol., 113, 265-280 (2008).

IN PROGRESS Submission to SIR

INFORMATION



ADDRESS 100 Bureau Dr., Stop 8462, Gaithersburg, MD 20899-8462

CONTACT B. E. Zimmerman: [email protected]

102


LABORATORY NIST

NAMES B. E. Zimmerman, J. T. Cessna, L. E. King

ACTIVITY Primary standardization of 223Ra

KEYWORDS Liquid scintillation counting, 4π−α proportional counter, CIEMAT-NIST, life sciences, Ra-223

RESULTS Standardized solutions, calibration service available

PUBLICATIONS

IN PROGRESS B. E. Zimmerman, J. T. Cessna, and L. E. King, “Standardization of the α-emitting radionuclide 223Ra”, to be submitted to ARI.

INFORMATION




CONTACT B. E. Zimmerman: [email protected]

103


LABORATORY NIST

NAMES D. E. Bergeron, B. E. Zimmerman

ACTIVITY Secondary standards for 223Ra

KEYWORDS Ra-223, ionisation chambers, life sciences

RESULTS

PUBLICATIONS

IN PROGRESS Developing new calibration factors for Ra-223 in syringe and vial geometries for commercial re-entrant activity calibrators; study of geometrical effects in measurement in ionization chambers

INFORMATION




CONTACT D. E. Bergeron: [email protected]

104


LABORATORY NIST

NAMES B. E. Zimmerman, J. T. Cessna, M. M. Hammond

ACTIVITY Secondary standards for 68Ge

KEYWORDS Ge-68, life sciences, gamma-ray spectrometry, ionization chambers

RESULTS Development and calibration of solid sources of Ge-68 in “mock syringe”geometry for calibration of activity calibrators, as well as phantom inserts forquantitative medical imaging

PUBLICATIONS In progress

IN PROGRESS

INFORMATION




CONTACT B. E. Zimmerman

105


LABORATORY NIST

NAMES Kenneth G.W. Inn, Svetlana Nour, Jerome LaRosa, Balazs Bene

ACTIVITY Low Level Radiochemistry Project

KEYWORDS Alpha spectrometry, beta spectrometry, data evaluation, data measurement, environmental control, life sciences, liquid scintillation, low-level, radiochemistry, simulation code, source preparation, traceability

RESULTS

PUBLICATIONS

IN PROGRESS NIST Radiochemical Intercomparison Program – air filter, soil, water, synthetic urine, synthetic feces, emergency preparedness

USDOE Radiological Traceability Program – air filter, soil, water, vegetation, synthetic urine, synthetic feces

Nuclear Forensics Reference Materials – 229Th SRM, Pu in Peruvian Soil, RDD Reference Solutions, 137Cs/137Ba Chronometer, Spiked Peruvian Soil

Natural Matrix Radionuclide Standard Reference Materials – Shellfish, Peruvian Soil

Whole-Body Phantom Measurements, Monte Carlo Simulations – BOMABs

Radionuclide Speciation in Soil/Sediment – Sequential Extraction Protocol

INFORMATION



ADDRESS NIST , 100 Bureau Dr, MS 8462, Gaithersburg, MD, 20899-8462, USA

CONTACT Kenneth G.W. Inn

106


LABORATORY NIST

NAMES R.Collé, L. Laureano-Perez

ACTIVITY NIST-NPL(PTB) agreement on 210Pb standards

KEYWORDS Alpha spectrometry, beta spectrometry, anticoincidence counting, gamma-ray spectrometry, HPGe, liquid scintillation, low-level, NaI sandwich detector, Pb-210, Po-210 ingrowth, Si surface barrier, Si(Li) detector

RESULTS NIST primary standardization of 210Pb by LS CNET (with confirmation by three other methods: anticoincidence counting, gamma spectrometry; 210Po ingrowth) has large uncertainty of 2.4 % at k = 2, which is comparable to that for NPL 210Pb standard.

NPL 210Pb standard (based on dilution of one obtained from PTB with confirmatory measurements by NPL) was purchased and compared to new NIST 210Pb standard (SRM 4337) by five methods: 4παβ LS; 4π NaI sandwich detector, HPGe spectrometry, 210Po ingrowth, and Si(Li) spectrometry.

Two standards agreed to within 0.3 %, which is well within the 1.5 % propagated standard uncertainty assigned to both standards. Findings suggest that originally assigned uncertainty on 210Pb standard may be overestimated.

PUBLICATIONS R. Collé and L. Laureano-Perez, On the standardization of 209Po and 210Pb, LSC 2008, Radiocarbon, in print.

IN PROGRESS A new NIST-NPL informal comparison is underway with measurements being performed on exchanged solutions sent by each respective laboratory.

INFORMATION


SRM 4337 available


R. Collé, L. Laureano-Perez & I. Outola, A note on the half-life of 209Po, Appl. Radiat. Isot. 65, 728-730 (2007); L. Laureano-Perez, R. Collé, R. Fitzgerald, I. Outola, L. Pibida, A liquid scintillation-based primary standardization of 210Pb, Appl. Radiat. Isot. 65, 1368-1380 (2007).

ADDRESS NIST, Gaithersburg, MD 20899-8462 USA

CONTACT R. Collé, [email protected]

107



LABORATORY NIST

NAMES R. Fitzgerald, R. Collé, L. Laureano-Perez, B. Zimmerman, L. King, M. Hammond, S. Nour

ACTIVITY Standardization of 229Th: Method comparisons

KEYWORDS Alpha spectrometry, beta spectrometry, anticoincidence counting, CNET, gamma-ray spectrometry, liquid scintillation, proportional counter, TDCR, Th-229

RESULTS A new standard (SRM 4328C) of 229Th was developed.

Its certification is based on standardization by 4παβ(LS)-NaI(Tl) live-timed anticoincidence counting (LTAC) with confirmatory measurements by five other methods: (i) 4παβ liquid scintillation (LS CNET) spectrometry (with 3H standard efficiency tracing for β efficiencies); (ii) an LS-based 4παβ triple-to-double coincidence ratio (TDCR) method; (iii) 2πα proportional counting (PC); (iv) 2πα spectrometry using Si surface barrier detector (α-SPECT), following chemical separation, with a 230Th standard tracer; and (v) HPGe γ-ray spectrometry (γ-SPECT) confirmatory measurements.

The expanded (k = 2) uncertainties for the five confirmatory methods were: (i) 1.2 %; (ii) 1.0 %; (iii) 2 %; (iv) 2 %; and (v) 3 %, respectively. All of the confirmatory measurements agreed with the certified value within their respective measurement uncertainties, except that for the TDCR result (-1.7 % difference). This discrepancy in methods has also been observed in 241Pu which suggests that there is a need for further study on this matter. The results for methods (i) and (iv) agreed with the certified anti-coincidence value to better than 0.1 %.

PUBLICATIONS in preparation

IN PROGRESS

INFORMATION


SRM 4328C available




108



LABORATORY NIST

NAMES R. Collé, L. Laureano-Perez, R. Fitzgerald, D. Golas, E. Crawford, J. LaRosa, I. Outola, L. Pibida, H. Hammond

ACTIVITY Rigorous evaluation of primary 241Am standardizations

KEYWORDS Alpha spectrometry, Am-241, anticoincidence counting; beta counting; CIEMAT/NIST method, efficiency tracing; gamma spectrometry, HPGe, liquid scintillation (LS); NaI sandwich detector,

RESULTS Performed a rigorous test of our capability to perform primary 241Am standardizations, which was achieved by comparing the results of four independent primary standardizations on three gravimetrically linked solution standards that were prepared for different NIST programs. Three of the standardizations were based on 4πα LS spectrometry and the fourth used a more powerful 4πα(LS)-γ(NaI) live-timed anticoincidence counting (LTAC) method. The 241Am solution standards comprised those produced for SRM 4322C, for a set of ampoules used for proficiency testing by particiapants in the NEI Nuclear Power Plant Program (PPP), a set of ampoules prepared for the Integrated Consortium of Laboratory Networks (ICLN). In addition, direct comparative measurements were made between the new SRM 4322C and the previous SRM 4322B issue. These were relative measurements based on γ-ray spectrometry with HPGe detectors and even more precise determinations using a 4πγ(NaI) sandwich detector that consists of two large 20-cm scintillation crystals. The certified values for the massic activity of the two SRMs agreed to within 0.13 % for the 4πγ(NaI) measurements. The primary standardization of SRM 4322C by 4πα LS and by the 4πα(LS)-γ(NaI) LTAC methods agreed to about 0.05 %; whereas the three 4πα LS standardizations on the three solution standards agreed to about 0.2 % compared to their gravimetric linkages.

PUBLICATIONS in preparation

IN PROGRESS

INFORMATION


SRM 4322C available




109



LABORATORY NIST (USA)

NAMES R.Collé, L. Laureano-Perez, B.E. Zimmerman & P. Cassette (LNHB)

ACTIVITY 241Pu standardization discrepancy

KEYWORDS beta spectrometry, CIEMAT-NIST efficiency tracing (CNET), liquid scintillation, TDCR, Pu-241

RESULTS New 241Pu standard (SRM 4340B) is consistent with previous standard (SRM 4340A) issued in 1996

Standardization based on CNET with confirmation by 241Am ingrowth measurements over a period of 31 years.

Two TDCR results (by NIST & LNHB) agree to within about 0.2 %, but differ from CNET certified value by 8 %; reason unknown!

PUBLICATIONS

IN PROGRESS New 241Pu comparison amongst few laboratories (NIST, LNHB, PTB & NPL) organized by NPL is planned

INFORMATION


SRM 4340B available




110



LABORATORY NIST

NAMES R. Collé, L. Laureano-Perez

ACTIVITY mass measurements with new comparator

KEYWORDS balance, mass, weighing

RESULTS Accurate mass measurements in a range from a few milligrams up to several kilograms are a vital component of our work. It is needed for the preparation of counting sources, for the production of large volumes of standardized solutions, and to ensure that the various sources and solutions are gravimetrically linked. Twenty two different microbalances, analytical balances, and large capacity balances are maintained by the Group for this purpose.

A new large capacity balance was needed and acquired: viz., a Mettler-Toledo AX12004 Mass Comparator, which is a high-precision mass comparator up to 12 kg and a 100 μg readability, with a two-position turntable and a large draft shield to accommodate large volumes. The comparator uses internal balance weights and has an "electronic" EMF compensation range of about 100 g.

Mass measurements are made by substitution weighing against a calibrated E1 weight set. Extensive tests evaluating the performance of the balance for our purposes have been completed, and new protocols for its use to measure large volume solutions have been developed.

PUBLICATIONS

IN PROGRESS

INFORMATION





111



LABORATORY NIST

NAMES D.E. Bergeron, R. Collé, B.E. Zimmerman

ACTIVITY New low-energy photon spectrometry system

KEYWORDS gamma-ray spectrometry, Si(Li), X-ray spectrometry,

RESULTS A new low-energy photonic-emission spectrometry system (consisting of a high-resolution, windowless, liquid nitrogen cooled, Si(Li) detector, an especially-designed and fabricated vacuum chamber equipped with a gate valve for couplingit to the windowless detector, and a suitable calibration range in the chamber tohandle a variety of source configurations and geometries) has been assembled.

Extensive performance and evaluation tests for energy resolution, detectionefficiency, and source positioning effects are currently underway to characterizethe system for use with point sources.

A comparative measurement of NPL and NIST 210Pb standards is underway.

PUBLICATIONS

IN PROGRESS

INFORMATION





112




NAMES L. Laureano-Perez, R. Collé, R. Fitzgerald, B. Zimmerman, L. Cumberland

ACTIVITY Investigation on 99Tc

KEYWORDS anticoincidence counting; beta counting; CIEMAT/NIST method, efficiency tracing; liquid scintillation (LS); radioactivity; SRM; standards; technetium-99

RESULTS A new 99Tc standard (SRM 4288B) consistent is with previous standard (SRM 4288A) within 0.06 %

Use of Aliquot 336 a complexing agent for the pertechnetate ion had negligible effect in the scintillation cocktail and water is not an efficient quenching agent.

The certified (LS) value was in agreement with 4πβ(LS) - γ(NaI) live-timed anti-coincidence (LTAC) counting; and an LS-based 4πβ triple-to-double coincidence ratio (TDCR) to within -0.22 % and +0.06 %, respectively,

PUBLICATIONS In preparation

IN PROGRESS

INFORMATION


SRM 4288B is available


B.M. Coursey, Standardization of Technetium-99 by Liquid Scintillation Counting, Int. J. Applied Radiat. Isot. Vol.35 No.12, pp.1103-1112, 1984.

L.Lucas, Calibration of the Massic Activity of a solution of 99Tc, Appl. Radiat. Isot. Vol.49, No. 9-11, pp. 1061-1064, 1998.


CONTACT L. Laureano-Perez, [email protected]

113




NAMES R. Collé, R. Fitzgerald

ACTIVITY Wall effect for alpha particles in LS counting

KEYWORDS Alpha spectrometry, liquid scintillation, wall effect , Am-241, Po-210

RESULTS Could not replicate magnitude of 0.2 % wall effect reported by Cassette (LNHB).

Experiments performed with solutions of 210Po and 241Am in a series of vials as a function of surface area and surface to volume ratios

Finding is equivocal.

PUBLICATIONS

IN PROGRESS Additional work planned by looking at non-detection efficiency with NIST 4πα(LS)-NaI(Tl) live-timed anticoincidence counting system

INFORMATION



P. Cassette, Evaluation of the influence of wall effects on the liquid scintillation counting detection efficiency for the standardization of high-energy beta and alpha radionuclides, Advances in Liquid Scintillation Spectrometry LSC 2001, Radiocarbon, Tucson, AZ, 2002, pp. 45-55.



114


Debut ICRM NL 23 - LNHB · his local organizing team, the Scientific Programme Committee, the...

Documents

Transcript of Debut ICRM NL 23 - LNHB · his local organizing team, the Scientific Programme Committee, the...